Delete Non uniformity of the backlight lcd color

I have a display cluster backlight LCD where I have to enter the text using OCR. However, given that the LCD backlight comes Center angle, he y nonuniformity of the background color as the light is not evenly distributed across the entire LCD. What are the options I have to consider to deal with the LCD backlight image to make it look like its evenly lit?

If the lighting conditions are not changed from image to image, then take a picture where all segments are turned off, store this reference image, then simply subtract from the actual image (the best way to do it - with SGL type permitting performance) - then your no consistency goes.

Tags: NI Hardware

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