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Technical News

 

System Updates & Development News

Hi! I'm Martin Paul Gardiner

Electronics and software development engineer and founder of GSA Golf

Regularly check out my tech news page for all our latest developments and free updates

if you have any questions

please feel free to contact me personally anytime at

Did you get a response to your e-mail?

We get really busy at times and e-mail responses can be late or even forgotten at times.

Please remind us again if you didn't get a response to your e-mail.


GSA Golf Control Panel (CP) downloads

GSA Control Panel (CP) update V.8.8.6.8 - Windows 8 / 10 version

March 17 2019

Download VC redistributables hereHere

Don't forget to run the download after it's downloaded!

A number of customers don't realize that a CP update is a dual process

i.e first download and then run the download

Note that anti-virus programs will probably try to block the GSA Golf CP update download but - be assured - there's no malicious software in the download update

so just ignore any warnings from your anti-virus programs and choose the "More options" and "Run anyway" option.

For new installations, download and run the following programs and files

GSA Control Panel (CP) full version download

V.8.8.5.8

Note that the full version installation will overwrite any user settings if you have had any previous GSA Golf CP installations

Download standard configuration files hereHere

GSA Golf Game software download

Warning! if you already have the full version GSA Golf /RedChain software installed, downloading this free single course version will prevent the full version from running correctly

Note: If you encounter a windows error message stating that it could not find d3dx9_30.dll when starting GSA Golf,

download and copy the d3dx9_30.dll to your windows\SysWOW64 folder.

Download here d3dx9_30.dll

Download d3dx9_30.dll 64 bit version here d3dx9_30.dll

Full version GSA Golf/ RedChain software Download here GSA Golf Setup

Experimenting and testing shots with manually entered launch parameters

You can test shots by manually setting the launch parameters in the Control Panel.

Right or Left mouse click in the Edit fields to change the parameters.

To see the trajectory of the ball in flight just click the "Launch Shot" button while having the GSA Golf software running in the background.

GSA Golf camera Viewer and driver software

Camera Driver 2.11 33MB

FlyCapture Viewer 2.11

Your GSA Golf cameras require that the camera drivers are installed. If you missed this during the initial installation process then download and install the above linked software


Got issues? Click the above Tech Help Q& A

Please check the above to see video setup instructions

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Click the above button to read about how to verify your current camera setup calibration

Need support ?

We offer free e-mail and remote access support

Our remote access support is done with the TeamViewer software.

Click the above image to download and install the free TeamViewer software on your PC


March 19 2019

V 8.8.6.9

Stereo calibration table

You can now manually edit the table entries.


March 17 2019

V 8.8.6.8

Chipping speed and chipping min ball spin adjustments in the Vcam window

Both these adjustments are now accessible whether or not the system is in or not in Chipping mode.


March 16 2019

V 8.8.6.7

Auto IBS image updates

An issue with IBS (Image background subtraction) in the V and H cam or Stereo Left/Right cams is that - over time -

the lighting conditions in the enclosure may change slightly causing small white dots or flecks to appear in the images that may cause the ball trace detection to fail.

To combat this issue, there's now the option in the V and H cams plus stereo L and R cams to automatically refresh the IBS image in a user defined time period.

i.e. every 10 mins or so.

To use, click the new "IBS Auto" option ON and using left and right mouse clicks over the option, set the refresh time period to your desired value.

Auto IBS image refresh time periods can be from every 1 minute to every 4 hours.

Bcam Pro

The BcamPro can now optionally use "reference frames" that increase the accuracy of side spin calculations.

A Bcam reference frame is a frame of the stationary ball on the hitting mat before it has been struck.

When the "Use Reference Frame" option is ON, the system will constantly look for a ball on the hitting mat or Tee and - if detected - will use this frame in the calculations.

Bcam and BcamPro

The new Bcam's "Match spin line end" function can now be switched on or off for those that don't want to mark a dominant ball logo end if the original ball logo doesn't have one.

See June 18 2018 entry on this page for details of the logo line matching feature.


March 12 2019

Introducing our new top of the line F4 golf simulator with 4k graphics

The new GSA Golf F4 is more aimed at our higher end customers at just under $20k featuring E6 Connect 4k software, 4k projectors

and the CX Surround quad camera tracking system.


March 11 2019

New lower prices for the CX Surround

As the CX Surround is pre-calibrated and essentially plug'n'play, there should be far less - if any - support required.

Even though the CX Surround will take far more time for us to assemble, the savings on support will out weigh this increase in time so we can offer the product at a lower price.

CX Surround 3D stereoscopic ball and club tracking

The CX Surround has all cameras and lights built into one long (8ft) case

CX2 Surround : $ 3,299

2 camera ball tracking - calculated club and ball spin data

CX3 Surround : $ 4,299

3 camera ball and measured club tracking - calculated spin and spin axis

CX4 Surround : $ 5,299

4 camera ball and club tracking - measured spin and spin axis

The CX Surround will be available for sale next month (April 2019).

Note: Comparable systems like the Foresight Sports's GC Hawk and aboutGolf's 3Trak stereoscopic camera systems are - to the best of our knowledge at least - in the $15,000 plus range.

E6 Connect

coming soon for all GSA Golf products.

Priced at $2,500 with 27 courses. Many more courses and features available with add-on subscriptions starting at $300 to $600 per year.


March 8 2019

Reference voltage drift on SX Line Scan camera

There's been a number of reports that the SX line scan sensitivity has to be re-set from time to time.

I was suspecting that the cause was reference voltage drift but tests showed no more than 2 milli-volt drift in over 8 hours.

Other causes could be varying ambient light conditions or debris or balls lying on the carpet under the line scan camera.

Note that the bright green trigger light does not always stay on when a ball or object is in the camera's FOV.

The green LED light usually just stays on for about 2 seconds and then automatically switches off no matter if a ball or object is under the camera or not.

The green LED trigger light is powered by the camera trigger signal and in order for it to re-trigger, the object (e.g. a ball or person) has to first go out of the FOV and back in again.

Note that all new GSA Golf line scan cameras will feature an additional Yellow LED that stays permanently ON when any object in it's FOV generates a trigger.

BTW. Older SX line scan cameras used a lens with a more restricted FOV lens than the more recent ones.

If using the older lens then you can upgrade to the newer lens for around $150


V 8.8.6.5

March 7 2019

CP System Administrator Mode

Bug Fix: System Adminstrator mode not being saved now fixed.

We've had a number of requests to add a lock mechanism to the CP so that unqualified persons do not play around with any of the CP's settings and setup.

This feature is of particular interest to commercial indoor golf facilities and also home users that may have kids accessing the CP.

Note that when this option is switched on, the current setup and configuration is automatically saved and that afterwards

no more changes are saved until this option is switched off.


V 8.8.6.4

March 3 2019

Bcam

The new overhead mounted Bcam software is activated in this version of the CP

System detects back spin, side spin and spin axis with one overhead camera.


V 8.8.6.3

March 1 2019

Ccam

Fix: Left / Right handed auto iron face adjustments were reversed.

New: User adjustable max measured face angle value introduced.

New: Warning shown if the "Ball Launch Position" appears not to be set correctly in the Ccam window.

If not set, the the Ccam won't detect a double club trace.


V 8.8.5.8

February 23 2019

Vcam putting

Vcam putting is now activated if not using an Hcam camera (for PX2-V users).


We've had one report

V 8.8.5.7

February 17 2019

Camera temperature

We've had one report that a camera stops functioning after around 9 holes but fixes itself after unplugging it and waiting 30 mins.

This seems to indicate the camera is overheating. To check on this, the CP now reads and displays the camera's current internal temperature.

The display is shown bottom left in all the camera windows.

Normal operating temperature should be around 60° C or 140 ° F.

CX Surround's case width increased to 96" (8ft).

The CX Surround now only uses a converging stereoscopic camera setup.

In order to ensure a +/- 25 degree ball path detection range, the casing's width has had to be increased from 4.5ft to 8ft.

BTW: Foresights Sports GC Hawk is around 7.6ft in width we have been told so we're about the same here.

A big advantage over the CX Stereo (using individual cameras) is that we can pre-calibrate the cameras if they are fixed in a single case.


V 8.8.4.7

February 1 2019

Roll distance now shown when putting in the CP

Roll distance in the CP is calculated from a user adjustable speed-to-distance table and not calculated from any math algorithms

Note that setting this roll distance for a particular ball speed in the CP has no effect on the distance the ball will roll on the green in the game software.

The CP has no direct influence on the ball roll distance in the game software other than it's ball speed and direction left or right.

i.e. the CP cannot tell the game software how far the ball will roll. The CP can only tell the game software that the putted ball has a particular speed and direction.

The game software then calculates the roll curve and roll distance based on the current green speed and green slopes.

In order to adjust the ball roll distance in the game software, you have to adjust the putting scaling factor in the Hcam window when in "Putting mode".

The current table entry - based on the putt ball speed - is shown in red text.

In order to change the entry you can either putt longer or shorter putts or move the blue scan lines closer and over the trace to reduce the measured trace length.


V 8.8.4.6

January 31 2019

New Trace checking method for both the Vcam and Hcams

As promised yesterday, the new trace checking feature can now detect a trace within pixel groups larger that the pixel count of the trace itself.

-

Also, the Max VPC check wasn't working with yesterday's version.

Update 2: Club fitter mode is now default OFF.


V 8.8.4.4

January 28 2019

New Trace checking method for both the Vcam and Hcams

Up until this version, the CP wouldn't be able to identify and find the trace in the V and H cam cameras if the image contained other bright pixels lines or objects .

Up until this version, the CP's image processing would just assume that the first bright pixel - starting from the left side of the image - would be the end of the ball trace.

The screen shot of the Vcam window above is using a test image containing the ball trace surrounded by many other bright pixels.

The new "Trace Checking" method scans the entire valid FOV of the image for all bright pixels before the actual trace scan begins. These pixels are counted and grouped.

A search routine then searches the groups for the largest group and temporarily sets the valid FOV scan zones - shown by the blue lines - around this group.

The trace scan routine can then easily find the trace.

Note that this method only works if the trace group itself is actually larger than any of the other bright pixel groups. As this is usually the case, the method will work for the majority of cases.

The above shows a typical example: just a small segment of the image contains a group of bright pixels. Up until now this would throw off the trace scan and the shot wouldn't be recognized.

Later this week I'll add more image processing code that will still detect the trace even if other bright pixel groups are larger than the trace itself.

Note that this issue has - in the past - caused a lot of frustrations with users that don't know the system well and call me for remote access support to fix this simple problem.

So I'm very pleased there's now a fix for this.


V 8.8.4.3

January 26 2019

Separate Ccam camera trigger delay for Chipping Mode

When chipping, your club speed will usually be far less than it would be for regular shots.

In order to keep the club tracking dot traces as close as possible to the ball, you can now set a longer trigger delay just for chipping.

To set, just press the "C" key to go into "Chipping Mode" in the Ccam window, select the "Ccam trigger delay" radio button and use the up/down arrow keys to adjust.


V 8.8.4.2

January 23 2019

Adjusting Camera trigger delay times not taking immediate effect

Update 1: Adjusting camera trigger delay times had no effect until the CP's current window changed. Now fixed.

This was inconvenient as - for example - if adjusting the Ccam trigger delay in order to move the trace lines nearer to the ball and the user tests the new delay time by swinging the club - the new delay time had seemingly no effect.

However, as soon as the Ccam window was closed, it did take effect but the user was not aware of this and - as the delay time could have been incorrectly set - club data readings could be incorrect.

Hcam now always ON

Update 2: Hcam putting is now always ON, "Max Ball Height Rolling" setting in the Vcam is thus no longer required. It's red line now follows the bottom scan line in the Vcam.

Reason: we're are not aware of anyone using Vcam putting anymore. Too many customers are moving the red line too far up - for no reason - which results in lower shots not being detected and we're having to remote support the issue.

Update 32: New camera registrations for new customers this week.

Camera serial numbers

Update 4: Serial number for camera 3 not being displayed correctly when camera assignments where changed. Now fixed.


V 8.8.3.9

January 14 2019

Update 1: Customer request: When camera calibration is switched off, it should stay switched off when re-starting the CP.

Update 2: New camera registrations for new customers this week.


January 12 2019

GSA Golf's camera system sales break the 1,000 mark.

Thanks to all from your's truly, Martin

Optical sensor systems past this marker too.


V 8.8.3.8

December 31 2018

LA Raw angle option now automatically switched off if using Calibration.

Max VPC limit now set to 9000.

Max min trace width for Ccams now set to 10

Ccam RAW face angle now displayed in the Ccam window (i.e. face angle before any iron face angle corrections).

Issue with Ccam face angle for Left handed players when "face angle before impact" is selected fixed.


V 8.8.3.4

December 23 2018

Perefact Parallel not sending correct surface lie and club type back to the CP.

For analysis only, this version of the CP is showing what codes are being sent back from PP, if any.

Issue with shared memory name when using (PP) Perefact Parallel fixed

If ball is on green, then club is automatically set to putter when using PP.


V 8.8.3.0

December 17 2018

Max VPC (valid pixel count) of a ball trace range now automatically set to 2000 to 5000.

see below for more details about VPC

Min ball gray scale in putting mode for the Vcam set to 100.

Customer "Jose" in Mexico set this value to 0 in the Vcam window today so that - no matter what - a Vcam trace would always be detected.

In order for putting to function, only the Hcam should detect the ball and no ball traces should be detected in the Vcam. The min putting mode gray scale is thus set to 100.


V 8.8.2.9

December 10 2018

Dual lane putting

l

"Dual lane putting only" is now an option in this version of the CP.

If you only want to putt from the left and right side of the regular hitting surfaces and still hit regular shots from a single lane hitting surface then select dual lane putting ONLY.

IMPORTANT: even though both left and right handed players are hitting regular shots from the same hitting surfaces,

you still have to set the ball launch position for both left and right-handed players - which - of course - should be exactly the same.

Switch to "Putting mode" and set the ball putting position for both left and right handed player separately. (Use the "L" key to switch from right handed player to left-handed player).

Stereo putting launch position

There is now a separate ball launch position for putting when using the stereo setup.

Stereo regular shot launch position

The launch position for regular shots when using the stereo setup can be set below the FOV of the camera. i.e. the Y position can be negative.

Stereo Direction Of Play

When using the stereo converging camera setup, the direction of play is from the bottom of the image to the top ( in order to increase ball path range)

This is now shown in the left and right cameras.

Ball spin camera for CX2, CX3 and PX5

A customer request was to use a ball spin camera together with the CX2, CX3 and PX5 systems.

This version allows you to select and add the "Ball spin camera" in the setup window for these systems.


V 8.8.2.7

December 3 2018

Update for Ccam users - Setting the default face angle adjustments of irons

As the Ccam is now our preferred method of club tracking, we're adding a number of nice new features to this system.

One major adjustment required with the Ccam when using Irons is to automatically convert the measured club face angle from the tracking dots placed on the top edge of the irons to real leading edge club face angles.

Instead of the user having to enter all these values manually for every iron, there is now a default set of adjustments that can be set with a single mouse click.

The values were obtained by measuring the top edge angle of all the clubs and placing the results in a table. Some clubs may differ so the user can still manually adjust if required.

BTW The Club tracking method using tracking dots is also used by the world's No. 1 golf Launch monitors from Foresight Sports with their GCquad and GC2hmt.

i.e. If it's good enough for them then it's definitely good enough for our products at less than half the price.


V 8.8.2.5

November 30 2018

Update for Ccam users

Ccam users can now set the exact scaling factor for club speed measurements by placing a ball on the mat and pressing the new "Ball detect Mode".

The Ccam window now also features an easier Club select button (switch the new "show club" option ON).

CX3 users that use the Ccam club tracking system can now set the new "do not use club data" in the CP's Setup window so that the system calculates club data from ball data.

This feature is primarily intended for commercial users that may have customers that don't want to stick the tracking dots to their clubs but the system should still detect a swing

so that inadvertent ball launches don't occur during ball pickup in the enclosure.

BTW the CX3 system using the Ccam club tracking camera is now our main recommended system as the Ccam club tracking accuracy out performs all our other club tracking systems

plus it's far easier to use and setup then the color CTS dual camera system that usually requires multiple PC,s to run and (for the most part anyway) still requires tracking dots to be applied to the clubs which defeats the whole object of using dual color cameras.

Preventing inadvertent shots when retrieving balls solution

as of this version:

1. set the option "No ball launch without swing being detected on mat" ( this is now for both camera club tracking mats as well as optical sensor -px2 - mats.

This simply means that if some kind of swing was detected on the club tracking mat ( it doesn't have to be valid, just that data or frames came in ) then - and only then - do we allow the shot to launch either with or without club data.

No launch when putting if the Vcam captures data

2. set the option "Allow putting without swing being detected"

When putting, the "No ball launch without swing being detected on mat" won't work because you won't be putting from the club tracking mat.

Today's Solution:

A putt is only recognized if the Hcam sees the ball but the Vcam doesn't as the Vcam's valid FOV is set to higher level than a rolling ball.

Thus, if the system is in putting mode or a putter has been selected and Vcam data has been captured, we don't launch the ball.

i.e. if walking around the enclosure in order to retrieve balls you will certainly trigger both the H and V cams and in this case we dis-allow the launch.

No launch when valid pixel count in the Vcam is over the user defined maximum

In addition to the above methods of preventing a launch when retrieving balls, the CP features a "Valid Pixel Count" known as VPC.

The VPC counts the number of valid pixels - i.e. the number pixels in the Vcam that are equal to or are above the "Min Gray Scale" setting.

If the VPC count is less than the max VPC then it will be assumed that image contains a ball trace and the ball will launch

Note that this method won't work if the player just reaches out with his club to retrieve a ball as club head can look like a small ball trace.

In this case, either the player shouldn't use a club to retrieve balls or the club tracking swing detection method should be used.

Setting the max VPC value

To set the max VPC value, simply strike a number of balls and note the current VPC count displayed in the Vcam window after each shot.

You'll probably find that - even with the longest shot - this value will be in the 2000 to 4000 value.

In this case, set the max VPC count (using the F8 - to decrease and F9 keys - to increase) to the max value you've seen plus a tolerance of 500 of so.


 

V 8.8.1.8

November 21 2018

Data wait count

The "data wait time" value is visible in the Setup window of the CP as of version 8.8.1.8

This number is used to force the CP to wait until club or ball spin data has been sent to the CP

Usually the V and H cams will capture the ball before club data coming over slower lines arrives at the CP.

In order to prevent the ball from immediately launching without club data in the game

the system will wait a while for the club and or spin data to arrive.

The wait counter is set to this value when both the V and H cams detect a shot.

If this number counts down to 0 then the shot will be launched with just the ball data from the V and H cams.

If you notice a significant delay between striking the ball and the ball launching in the game, reduce this wait count value in the Setup window of the CP.


November 20 2018

Converging stereo camera test results

Customers Keith and Kevin are doing a great job of testing the new stereo camera setup.

The first results look very promising

The above video is from customer Keith showing putting using the new converging stereo setup.

Click the above to see screen shots of Kevin's full swing shots on the "Converging stereo setup" page and read some of Keith's and Kevin's comments


V 8.8.1.6

November 19 2018

Ball spin detection improved for LX and Bcam systems.


V 8.8.1.4

November 14 2018

Ball spin axis reverse option for Lefties only.

This setting can be made for left handed players only now.

Bug fix.

Calibration table for Converging stereo cameras not being saved.


 

V 8.8.1.2

November 12 2018

There are now two optional ball putting positions - 1 for left and 1 for right handed players.

This option is useful when there is insufficient distance between the end of the hitting mat surfaces and the SX line scan camera and/or trigger array.

The player then putts from the side of the regular hitting surfaces and the game feedback to the Control Panels tells the CP if the current player is a left or right handed player.

The CP will then automatically switch the puttiing ball hitting positions.

To switch this option on , hold the shift key down in the Hcam window and - on the far lower left - click the "Left/Right dual hitting lane" option "ON".

Note that this option also sets two regular shot ball hitting positions so you'll have to set the regular ball hitting positions for both left and right handed players too.

These will be in the same position if not using real dual lane hitting mats.

Ball spin axis reverse option.

A left-handed player commented that he thinks the ball spin axis is reversed for left handed players. We couldn't reproduce the issue but there is now a "Reverse spin axis" option in the "Setup window".


November 10 2018

Verifying your current camera calibration

Click the above button to read about how to verify your current camera setup calibration


V 8.8.0.9

October 26 2018

Balls lying around on the floor in the FOV of the H cam camera

More improvements to this new feature.

CP bug causing occasional erratic ball speed measurements and carry distances up to 100 yards off.

The relative new "Hcam launch" feature has a bug in it causing occasional erratic ball speed measurements and carry distances that can be 50% or 100 yards off.

Until a solution is found we strongly recommend either switching this option OFF (lower right side of the Hcam window - keep clicking until it states "OFF") or installing this new release of the Control Panel were the option has been de-activated.

What is "Hcam launch" you may be asking?

" Hcam launch" is used when very high lofted shots are made so that the ball is not in the FOV of the Vcam but the Hcam picked it up.

In this case, the ball speed will be measured from the length of the trace in the Hcam only.

The problem (or bug) is a timing issue. i.e. while the Hcam picked up the shot, the system doesn't always wait long enough for the Vcam image to come in

and thus uses the Hcam to measure ball speed which isn't very accurate for normal shots but good enough for high lofted chip shots. i.e. it was agreed to better launch the ball for a high lofted chip than not at all.

BTW. The issue of very high lofted shots not being in the FOV of the Vcam can be better resolved by simply moving the Vcam further towards the hitting position.


October 18 2018

GSA Golf (www.golf-simulators.com) website updates

Numerous updates to this website have been done recently and many more to come.

Current updates include:

1. https SSL Secure website certificate secured

2. Mobile phone friendly updates on all pages (this update took 2 full days alone). To be honest I didn't want to do this as this website looks so much better on a full desktop screen

but I guess I have to go with the times and make it more mobile phone freindly even though I hate the look of this website on a tiny mobile phone.

Google says they will drop my rankings if not - so okay - I'll do it. "Whatever you say boss".

3. There are now sub menus on most pages to allow for easier navigation.

4. more CSS style coding, XML site maps and SEO.

5. optimized images to allow for faster page loading times. Page load times are now at least 2 or 3 times faster than before.

To come soon:

1. splash and sliding images

2. simplified product selection

BTW. I still love my "easy on the eyes" dark blue background on this website where the images really pop out.

Looking at very bright glaring white background sites are a real strain on the eyes after a while in my opinion and seem to be more hard sell - in your face- sites which this website isn't and nor are we.

BTW 2. in case you're wondering why we have two web sites (GSAgolf.com and Golf-simulators.com). The reason is because we've had www.golf-simulators.com for over 20 years now and it has a good organic Google ranking

whereas the newer www.GSAGolf.com doesn't. The GSAgolf.com website is now only a link to the main "Golf-simulators.com" website.

Note that without a Google ranking for our website we'd either be none existent in this industry or would be forced to use Google AdWords advertising which can cost up to $1,000 a day if the ad should appear on page one internationally all day and everyday.

We do - in fact - have a low budget ($500 a month) Google AdWords ad running but it is usually clicked out to it's max daily budget within a few hours so you probably won't see it.


V 8.8.0.3

September 12 2018

Hcam / CX Surround IBS tests

IBS (Image Background Subtraction) tests of ceiling mounted cameras using the regular turf carpet with varying ambient light conditions (i.e. next to an open window with sunlight and cloudy skies) show that IBS still works well.

Other than a few small dots appearing the image, the ball trace is still very well high lighted. Note that IBS will probably be used in the new CX Surround to ensure that high speed balls with faint ball traces will be detected.

Balls on floor detection

Improvements to this feature have been made in this version of the CP


V 8.8.0.1

Balls lying around on the floor in the FOV of the H cam camera issue now solved

Balls that bounce back from the screen and lay around on the floor in the FOV of the Hcam can cause problems with the ball path detection of the Hcam.

This version of the CP now automatically detects such balls and declares them as invalid areas so that the correct ball path can be measured.

As this is a new feature, this option can be switched on or off.

Click the above images to read more about this new feature.


August 7 2018

V 8.7.9.6

Minimum ball speed reduction when in Chipping Mode now limited to 50% instead of 2.5% as number of customers reported ball distances when in chipping mode were only a couple of feet.

A remote support session showed that their chip ball speed reduction was set to 2.5%.

The "What's in the Box" page has been completely updated.

Lots more info and ideas on how to raise flooring on the flooring page.


August 3 2018

USB over CAT5

There's a new wiring diagram for the PX5 system using USB over CAT cabling on the wiring page now


July 30 2018

New IBS - Image Background Suppression method

V 8.7.9.4

IBS has been significantly improved in this version of the CP.

With IBS ON, the background is reduced in brightness to reveal the ball trace.

Click above to read more about IBS


June 18 2018

V 8.7.9.1

Bcam and LX systems.

Measuring ball spin using the ball's logo.

New logo matching end detection.

An issue with measuring ball spin using the ball's logo is that the correct matching ends of the logo must be detected in order to correctly measure the amount of rotation within the time frame..

i.e. if one end of the logo is found in image 1 then that same end has to found in image 2. Failing to do this can result in very different ball spin rate measurements.

The above two images show a ball spinning at a rate of 8321 rpm. We know this because the amount of rotation within the 2 ms frame delay was 149.78 degrees.

And we only know the correct amount of rotation because the Letter "C" in the Calloway logo has been detected correctly in both frames. This is shown by the two red cross hairs over the letter "C".

Without this new "Matching logo end detection" feature, the CP image processing may well get the ends mixed up and then a totally different amount of rotation will be measured

(i.e. 30.22 degrees here) and thus a totally different and false ball spin rate will be calculated. (Note that the two sets of images are from the same shot.)

As can be seen from the above two images, the letter "C" in the Calloway logo has not been detected in image 2 (i.e. there's a green cross hair on the "C" instead of a red cross hair).

And thus a false spin rate measurement was calculated (i.e. 1678 rpm instead of the real 8321 rpm).

It should be noted that not all ball logos have a dominant end and thus it may be required to use a black magic marker or black ink pen to accent one end of the logo.

Note that measuring ball spin using the logo (or any marked balls like those with A systems) is the only way a camera method of ball spin detection is able to do this in real time. i.e. without a long 2 to 4 second or so lag time (SkyTrak / GC2 etc).

While radar systems (Trackman, FlightScope etc) require metallic dots be applied to the ball and the ball be placed with the dot facing upwards.


Typical screen shots are as in the below images

The side mounted Vcam detects vertical launch angle and speed of the ball

The ceiling mounted Hcam camera detects ball path for normal shots

and ball path plus speed when putting

Ccam club path, speed and face angle

Installation


Factory

Based in Naples, Florida,

all GSA Golf products are meticulously assembled and tested by hand to meet the highest industry standards


A bit about me just in case anyone is interested

When I'm not developing golf simulators, you'll find me in my music studio