Quick fractal compression and decompression method for multicasting stereo video based on object

Abstract

The invention discloses a quick fractal compression and decompression method for a multicasting stereo video based on an object. A middle eye is selected as a reference eye and is compressed by MCP (motion compensation prediction), and other eyes are compressed by DCP (disparity compensated predication) +MCP; the middle eye is the reference eye, and independent motion compensation prediction mode MCP coding is adopted; a video object splitting plane, i.e. an Alpha plane, is obtained with a video splitting method to cause an initial frame to be subjected to DCT coding; the non I frame is subjected to motion estimation / compensation coding to calculate the pixel sum and the pixel quadratic sum of sub blocks relevant to a sub block region and a father block region; the pixel sum and the pixel quadratic sum of the interpolated value corresponding block of a subpixel are calculated; preview search limiting condition judgment is carried out; the most similar matching block in a previous frame of search window is found by an unsymmetrical cross-shaped multi-level hexagon lattice point search algorithm matched and improved by a subpixel block; and the left eye and the right eye are coded by MCP+DCP. During DCP coding, the subpixel block is matched, and conditions are restricted by disparity distribution. In the decoding process, the step of filtering is carried out with a deblocking loop method.

Description

technical field [0001] The invention belongs to the field of video compression coding, relates to compression coding of multi-eye stereo video, in particular to a video compression coding method based on objects and fractals, which lays the foundation for the real-time application of stereo video coding and further improves the fractal multi-eye stereo Performance of video compression encoding. Background technique [0002] The concept of Object-Based (OB) coding was first proposed by the MPEG-4 standard. Using the object-based video compression coding method enables the foreground objects and background objects of each frame of video to be independently coded, which can further improve compression. At the same time, some new functions can be realized at the decoding end, such as independent transmission and decoding for each video object, object and background replacement, object-based video retrieval, especially compared to the standard encoding method, in the object Bett...

AI Technical Summary

Problems solved by technology

However, in the cyclic predictive coding (CPM) method, in order to ensure that the initial frame can approximately converge to the original image after its own cyclic decoding, the compression process needs to go through complex transformations, searches, and iterations, etc., and the compression time and image quality are difficult to meet the requirements.

At present, the typical fractal image and video compression method has a large amount of calculation, the encoding speed is slow, and the quality of decoding needs to be improved, so the fractal image and video compression method needs further improvement and improvement

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