Image processing device and a method for image enhancement

An image processing device, comprising:

• a neural network circuit, configured to receive an input image and perform an image processing operation on the input image according to fixed parameters to output a first intermediate image;
• a gain control circuit, coupled to the neural network circuit, and configured to receive the first intermediate image from the neural network circuit, and multiply the first intermediate image by at least one amplitude gain to output a second intermediate image;
• a scaler circuit, configured to receive and scale the input image, and output the scaled input image;
• and
• an image merge circuit, coupled to the gain control circuit and the scaler circuit, and configured combine the second intermediate image and the scaled input image to obtain an output image,
• wherein the gain control circuit multiplies the first intermediate image by different amplitude gains according to image details, and the image details comprise edges, texture and/or lines of the first intermediate image.