Coding method and device of space-time signals

Abstract

The embodiment of the invention provides a coding method and device of space-time signals. The method comprises following steps of collecting the space-time signals of each partial space location in a monitoring area; accumulating the space-time signals according to time, thus obtaining a signal accumulated strength value; transforming the signal accumulated strength value through a filter; when the transforming result exceeds a specific threshold value, outputting pulse signals; successively arranging the pulse signals corresponding to the partial space locations into sequences according to the time, thus obtaining pulse sequences for expressing partial space location signals and the changing processes of the partial space location signals; arranging the pulse sequences of all partial space locations into a pulse sequence array according to space location interrelations; and taking the pulse sequence array as the code of dynamic space-time signals of the monitoring area. According to the embodiment of the invention, through carrying out pulse type coding in a time domain and then carrying out space domain coding according to the space locations, the time domain and space domain information is reserved sufficiently; the static image at a random moment can be reconstructed; and the fine moving process of a high speed moving scene is reserved.

Description

technical field [0001] The present invention relates to the technical field of information coding, in particular to a method and device for coding space-time signals. Background technique [0002] The form that exists in a certain time and space is the source of information. For example, the propagation of light in space forms a dynamic image, the flow of a large number of water molecules produces ocean information, and the dynamic movement of air molecules and other floating objects forms climate information. As far as dynamic images are concerned, humans and creatures perceive the world by capturing photons through their eyes. Modern cameras use CCD (Charge-coupled Device, charge-coupled device) or CMOS ((Complementary Metal Oxide Semiconductor, Complementary Metal Oxide Semiconductor) to capture photons to record dynamic changes. The world generates a large amount of image and video data. [0003] Traditional methods of expressing moving images are two-dimensional images...

AI Technical Summary

Problems solved by technology

However, such a video frame rate cannot represent faster-changing physical phenomena, so high-frequency cameras have appeared, and their frame rates can reach 1,000 frames per second or even 10,000 frames or even higher. The problem brought about is the large amount of data. As the scale increases, the corresponding collection and processing circuit design is expensive or even impossible. More importantly, the increase in the frame rate means that the exposure time of a single frame is reduced, and the exposure of a single frame image collected is seriously insufficient. The way to make up for it is to increase pixel size, which in turn brings about a reduction in spatial resolution

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