Image processing system capable of generating a snapshot image with high image quality by using a zero-shutter-lag snapshot operation

An image processing system comprising:

• an image capturing device configured to capture a raw image with a first resolution;
• a pixel binning device coupled to the image capturing device and configured to output an enhanced image with a second resolution according to the raw image;
• a temporal filter coupled to the pixel binning device and configured to output a preview image with the second resolution according to the enhanced image;
• a first memory coupled to the image capturing device and configured to buffer the raw image;
• a re-mosaic device coupled to the first memory and configured to output a processed image with the first resolution;
• a second memory coupled to the temporal filter and configured to buffer the enhanced image;
• and
• a blending device coupled to the re-mosaic device and the second memory and configured to output a snapshot image with the first image resolution according to the processed image and the enhanced image;
• wherein the image capturing device, the pixel binning device, and the temporal filter are always enabled, the re-mosaic device and the blending device are optionally enabled according to a snapshot signal, and the first resolution is greater than the second resolution.