Image transmission method and system based on rectangular segmentation and interlaced scanning

Abstract

The invention discloses an image transmission method and system based on rectangular segmentation and interlaced scanning. The image transmission method based on rectangular segmentation and interlaced scanning comprises the steps that firstly, all image change areas are found out by comparing every two adjacent frames of images; secondly, a set of non-overlapping rectangular areas with the smallest areas is obtained according to the coordinates of variable pixels, wherein only image data contained in the set of rectangular areas are sent each time, so that transmitted data of each frame are reduced, and the purpose of effectively reducing the size of transmitted data is realized. According to the image transmission method and system based on rectangular segmentation and interlaced scanning, a screen is dynamically divided into different numbers of rectangular blocks according to the different numbers of variable areas of the frames of images, and the problems that the number of blocks into which a screen is divided can not be determined easily and the adaptability is poor when a fixed blocking image transmission algorithm is adopted are solved; the screen is divided into rectangular blocks in different sizes according to the difference of the variation scope of each frame of image, and the problem that the size of transmitted data can not be effectively reduced under the condition that the image variation area of the screen is right located at the critical point of multiple rectangular blocks when the fixed blocking image transmission algorithm is adopted is solved.

Description

technical field [0001] The invention belongs to the technical field of computer network communication, and in particular relates to an image transmission method and system based on rectangular division and row scanning. Background technique [0002] With the development of network technology, remote computer teaching, remote network monitoring, video conferencing and other projects have been widely used, and in these applications, real-time transmission of computer screen bitmaps is required. Therefore, in order to provide users with good screen image transmission services without affecting the services provided by other applications, the real-time screen image transmission system should meet the following conditions: low CPU usage, low bandwidth occupancy, and try to avoid delay, jitter and The occurrence of Huaping phenomenon, etc. In order to meet this condition, two methods are usually adopted: one is to increase the bandwidth of the network; the other is to reduce the ...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide an image transmission method and system based on rectangular partitioning and scanning, aiming to solve the problem of difficulty in determining the number of screen blocks and poor adaptability in the fixed block image transmission algorithm. The critical point of a rectangular block cannot effectively reduce the amount of transmitted data.

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