The invention relates to the technical field of real-time three-dimensional
image processing, and provides a method and a device for improving the visual fidelity of an image. According to the method, on the basis of the assumption that original pixels are located between two adjacent surfaces in a
source image, the positions where the original pixels are located are classified, and different intersection filters are used for
processing the original pixels meeting corresponding classification standards; after the intersection filter responds, an amplification coefficient corresponding to the decomposed
source image features in at least one dimension is determined according to the
processing logic of the intersection filter, original pixels are amplified based on the amplification coefficient, and a good enough approximate estimate of the amplified target image is obtained; according to the image super-
resolution algorithm, the specific parameterization of the image is realized, the support of a filter is reduced to the maximum extent, the
image quality and the calculation complexity are balanced to the maximum extent in the limited
fixed function hardware prediction, and the problems that the image super-
resolution algorithm in the prior art is not suitable for hardware and is poor in effect are solved.