I was trying to quantify ball mark volume by using our digital imaging analysis setup. SigmaScan software is used to pick out red pixels of a golf ball to determine golf ball lie, green color, or establishment of various grasses. A small side study was performed recently to correlate digital imaging analysis and the volume or size of a ball mark. A golf ball was slowly depressed deeper and deeper into a clay block so measurements and photographs could be obtained at various depths. The clay was a brown/red color, so the macro normally used for ball lie measurements was counting the clay as red pixels.
In order to not count the clay, we had to adjust the hue and saturation description within the software. To adjust numbers and determine the correct settings for different pictures:
1. Open an image in SigmaScan.
2. Under the image menu button, click on...
3. When the color range appears, you can move the rectangle to various portions of the box to change the hue (actual color in spectrum) and saturation (brightness/dullness of color) setting.
4. Run those settings with the image to see what all the program is picking out with the given values.
5. When you get a setting that works well, write it down, and alter the settings in the macro.
6. Run the batch analysis and work with the data in the Excel file.
This was information I learned today while trying to analyze the photographs.
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