System and method for adjusting backlight in measurement of a profile image

A computing system for adjusting backlight in measurement of a profile image of an object on an image measuring machine, the computing system comprising:

• an image processing module configured for performing a mean filter processing and a binary image processing on the profile image of the object, after a light source of the image measuring machine is set to an original intensity level;
• a calculating module configured for setting intensity variables to adjust backlight intensity of the light source, and using the intensity variables to calculate an optimum intensity level of the backlight intensity utilizing an iterative method;
• an adjusting module configured for adjusting the backlight intensity of the light source to the optimum intensity level to obtain an optimum profile image of the object;
• a reporting module configured for reporting and displaying the optimum profile image, and storing the optimum profile image and the optimum intensity level into a storage system;
• and
• at least one processor that executes the image processing module, the calculating module, the adjusting module, and the reporting module.

A non-transitory computer-readable medium having stored thereon instructions for adjusting backlight in measurement of a profile image of an object, the computer-readable medium, when executed by a computer, causing the computer to perform a method, the method comprising:

• setting a light source of an image measuring machine to an original intensity level;
• obtaining the profile image of the object on the image measuring machine, and performing a mean filter processing and a binary image processing on the profile image;
• setting intensity variables to adjust backlight intensity of the light source, the intensity variables comprising an upper approach level and a lower approach level;
• calculating an optimum intensity level of the backlight intensity utilizing an iterative method;
• adjusting the backlight intensity of the light source to the optimum intensity level to obtain an optimum profile image of the object;
• and
• storing the optimum profile image and the optimum intensity level into a storage system.