Image sensor module, image processing system, and image compression method

An image sensor module comprising:

• an image sensor configured to generate image data comprising a plurality of pixels;
• an encoder configured to generate compressed data comprising a plurality of bitstreams by sequentially compressing the image data generated by the image sensor in units of pixel groups, and to compress a target pixel group to be compressed according to at least one encoding method of a plurality of encoding methods;
• and
• an interface configured to output the compressed data to an external image processing device,
• wherein the encoder, according to a first encoding method of the plurality of encoding methods, generates average values based on pixel values of target pixels, generates balance information comprising compensation values to be applied to the average values, and generates a bitstream comprising the average values, the balance information, and compression information.

An image processing system comprising:

• an image sensor configured to sense a received optical signal and generate image data;
• an encoder configured to sequentially compress a plurality of pixel groups of the image data and generate a plurality of bitstreams;
• and
• a decoder configured to de-compress the plurality of bitstreams and restore the image data,
• wherein the encoder generates balance information comprising average values based on pixel values of target pixels and compensation values to be applied to the average values, and generates a bitstream comprising the average values, the balance information, and compression information.