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What technology does the OV7670 Camera Module use for image sub-sampling?

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What technology does the  OV7670 Camera Module use for image sub-sampling?

(a) VarioPixel

(b) ConstPix

(c) Activarr

(d) Tidal

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I need to ask this question from OV7076 Camera Module topic in section Interfacing of Sensors, Actuators, and Other Modules of Arduino

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Correct option is (a) VarioPixel

The explanation: VarioPixel is the correct name of the sub-sampling technology used by the  OV7670 Camera Module. Sub-sampling in image processing is the process of reducing the image size by removing information all together.

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