Classification of digital image processing

According to the different purposes of image processing, digital image processing can be divided into three categories:

? For example, the brightness and color transformation of the image, the enhancement and suppression of some components, the geometric transformation of the image and so on. To improve the visual effect of the image.

? The extracted features can include frequency domain features, gray or color features, edge features, regional features, texture features, shape features, topological features and relationship structures, which provide convenience for analyzing images.

? Transform, encode and compress the image data.