Maximizing perceptual quality and naturalness of captured images

摘要

A method, system and computer program product for improving the perceptual quality and naturalness of an image captured by an image acquisition device (e.g., digital camera). Statistical features of a scene being imaged by the image acquisition device are derived from models of natural images. These statistical features are measured and mapped onto the control parameters (e.g., exposure, ISO) of the digital acquisition device. By mapping these statistical features onto the control parameters, the perceptual quality and naturalness of the scene being imaged may be based on the values of these control parameters. As a result, these control parameters are modified to maximize the perceptual quality and naturalness of the scene being imaged. After modification of these control parameters, the image is captured by the image acquisition device. In this manner, the perceptual quality and naturalness of the image captured by the image acquisition device is improved.

主权项

1. A method for improving a perceptual quality and naturalness of an image captured by an image acquisition device, the method comprising:
detecting a scene being imaged; deriving statistical features of locally normalized luminance coefficients from said scene being imaged from a model of natural images with little or minimal distortion; measuring said statistical features from said scene being imaged; mapping said statistical features onto one or more control parameters of said image acquisition device; and modifying, by a processor, said one or more control parameters of said image acquisition device to maximize said perceptual quality and naturalness of said scene being imaged.