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What is colorless scrolling?

Date:2020-04-17

When a digital signal processor video camera is used under fluorescent lights, it can only produce images with severe color scrolling. The image will change from white to blue, pink and back to white, and so on. This is due to problems caused by AC power running at 50/60 Hz. The incandescent light bulb can provide stable light, and the light of the fluorescent lamp fluctuates due to the change of the intensity and color of the alternating current at a speed of 8.3ms. The traditional surveillance camera calculates that the white balance needs 100~150ms (0.1~0.15), which is 8.5ms slower than AC, so it can never catch up. Only 8 cycles of the current image can clearly produce color scrolling.