ANAMORPHIC STRETCH IMAGE COMPRESSION

摘要

A feature-selective compression method and system are described which uses a transformation causing feature-selective stretching of the image being compressed. As a result, additional samples are allocated to sharp features where they are needed, and less to coarse features where they are redundant. The method can be applied to still and video images, whether they are monochrome or color images or 3D images, and operates in open-loop fashion and does not require prior knowledge of the image. The method can be applied by itself or combined with other types of compression (i.e., JPEG, WebP) to further compress the image.

主权项

1. A method for imaging an object with high spatial resolution, comprising:
digitally imaging an object with a detector having a Fourier plane; and performing a transformation with a transformation stage, placed between an object being imaged and said detector, wherein said transformation imparts a nonlinear warp onto the spatial frequency spectrum of the image at the Fourier plane.