Screen vision recording method irrelated with hardware and operating system platform

A technology of operating system and recording method, applied in the computer field, can solve the problems of large amount of data, lossy compression, high cost, etc., and achieve the effect of small amount of data, fast speed, and reduced amount of data

Active Publication Date: 2008-06-11
WISESOFT CO LTD +1
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Problems solved by technology

[0003] The most common implementation of screen scene recording is on the following operating platforms: (1) screen recording software such as screen recording experts under the windows platform, these screen recording software record the changes of the screen like a video recorder, and compress and store it into a common video format, its disadvantage is that it can only run on the windows platform, and it is lossy compression, and the amount of recorded data is lar

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  • Screen vision recording method irrelated with hardware and operating system platform
  • Screen vision recording method irrelated with hardware and operating system platform
  • Screen vision recording method irrelated with hardware and operating system platform

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Embodiment Construction

[0049]Because it takes a very long time to acquire a full-screen image, the present invention designs an algorithm for acquiring screen images multiple times and incrementally. This algorithm can record screen images completely and accurately without affecting other running programs. The key point of the invention is to calculate the difference between the current bitmap and the previous frame bitmap, which requires the algorithm to be fast and accurate. The present invention adopts the method of dynamic incremental key frame (Dynamic Incremental Snapshot) to record the complete initial bitmap data of the screen, and then record the changed incremental bitmap data to achieve the purpose of recording continuous screen scenes. Screen data records are represented by screen rectangular block data, that is, all changing images (including full screen) use (X, Y, WIDTH, HEIGHT, data-length) + image bitmap data after lossless compression. Divide the full-screen image according to the ...

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Abstract

The invention relates to a screen scene recording method which has no relationship with hardwares and operating system platforms, which belongs to an image processing category of the computer filed, is used for randomly recording screen scene data of various platforms and has two working modes of history playback and real-time playback, and the screen scene data can be played back on the operating system platforms of various hardwares. By adoption of a means of dynamic increment of key frames, complete initial bitmap data of a screen is recorded firstly and then changed bitmap data is recorded, and screen images are recorded continuously by adoption of a data superposition means. Moreover, the invention adopts a comparison algorithm of computing variable increments of the images and divides a full-screen image into rectangles, and a comparison algorithm of digital dot matrixes of basic rectangular units is used for indicating data change of image blocks. The invention comprises two processes of record and playback, and softwares are stored into four principal processing modules which are respectively scene recording module, data storage and acquisition module, a scene playback module and a scene data real-time module. The invention has the characteristics of quick recording speed, small data quantity, real-time playback, realization of remote monitoring and clear playback.

Description

(1) Technical field [0001] The invention belongs to the field of image processing in the field of computers, and relates to a screen scene recording method, in particular to a screen scene recording method independent of hardware and operating system platforms. (2) Background technology [0002] Screen scene recording is used to continuously record the images displayed on the screen during the operation of major missions, real-time systems (Mission Critical, Realtime), such as air traffic control (ATC), command automation and other systems, so that users can analyze the recorded data Conduct accident investigation, supervision and training, and remote monitoring. [0003] The most common implementation of screen scene recording is on the following operating platforms: (1) screen recording software such as screen recording experts under the windows platform, these screen recording software record the changes of the screen like a video recorder, and compress and store it into ...

Claims

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Application Information

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IPC IPC(8): H04N5/92H04N7/18G11B20/10G06F3/14
Inventor 杨波俞祥基杨军
Owner WISESOFT CO LTD
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