Camera module, image processing system and image compression method

A camera module comprising:

• an image sensor configured to generate image data comprising a plurality of pixels;
• an encoder configured to divide the plurality of pixels into a plurality of pixel groups, and sequentially compress the plurality of pixel groups to generate compressed data comprising a plurality of bitstreams;
• and
• a memory storing reference information comprising pixel values of pixels compressed by the encoder,
• wherein the encoder is further configured to:
• detect a bad pixel in a first pixel group;
• generate a first bitstream corresponding to the first pixel group by compressing first pixel values of a plurality of first pixels in the first pixel group based on a result of detecting the bad pixel and the reference information;
• and
• update the reference information based on a corrected pixel value obtained by correcting a pixel value of the bad pixel.

An image processing system comprising:

• an image sensor configured to generate image data comprising a plurality of pixels;
• an encoder configured to generate a plurality of bitstreams by sequentially compressing a plurality of pixel groups in the image data;
• and
• a decoder configured to restore the image data by decompressing the plurality of bitstreams,
• wherein the encoder is further configured to:
• detect a bad pixel in each of the plurality of pixel groups;
• compress pixel values of a second pixel group among the plurality of pixel groups according to reference information, the reference information being generated based on pixel values of a first pixel group among the plurality of pixel groups that is compressed prior to the second pixel group;
• and
• update the reference information based on a result of detecting the bad pixel.