Image processing method, data set collection method and image processing apparatus

An image processing apparatus, comprising:

• an image blur unit, for making a high-resolution high-definition image interact with a calibrated blur kernel to obtain a blurred image;
• a first noise injection unit, for injecting calibrated noise into the blurred image to form a first noise image;
• a downsampling unit, for degrading, by using a downsampling method, the first noise image into a low-resolution image;
• a first compression unit, for performing lossy compression on the low-resolution image to obtain a compressed image;
• a second noise injection unit, for adding into the compressed image random noise points that simulate a transmission process, to form a second noise image;
• and
• a second compression unit, for performing lossy compression on the second noise image and saving to obtain a low-quality low-resolution image;
• wherein the high-definition image is an image that is formed by means of photographing an organ in a body using a capsule endoscope, and the calibrated blur kernel and calibrated noise are results that are obtained by means of fitting a photographing process of the high-definition image.