Method and system for processing bitmaps of infrared screen

Abstract

The invention discloses a method and a system for processing bitmaps of an infrared screen. The method includes steps of a, sequentially performing gating on an infrared transmitting element and one or a plurality of infrared receiving elements corresponding to the infrared transmitting element, scanning touch detection regions in one or a plurality of directions, judging whether various scanning lines are blocked or not according to light signals received by the infrared receiving elements and recording various pixels in the touch detection regions in a bitmap form; b, storing each pixel in the corresponding bitmap by bits smaller than one byte. The method and the system have the advantages that each pixel in the corresponding bitmap is stored by the bits smaller than one byte, and accordingly a plurality of pixels can be represented by the corresponding single byte, a word length and a word; more than one pixel points can be computed by one-step operation during processing, so that the processing speed can be increased; problems of slow processing speed and wastage of memory spaces in the prior art can be effectively solved by the aid of the method for processing the bitmaps of the infrared screen.

Description

technical field [0001] The invention relates to an infrared screen image processing technology, in particular to a bitmap processing method and system for an infrared screen, belonging to the technical field of image processing. Background technique [0002] In the infrared screen image processing, the image processing operation is generally performed on the bitmap in units of bytes. At present, many processors have special instructions for byte processing. When performing image processing in bytes, they can be randomly addressed. As long as the address of a certain pixel is given, the pixel can be read and written arbitrarily. Pixels do various processing, so it is more convenient to use byte processing. For example, to clear the pixel at the point (x=25, y=37), if it is processed by bytes, the general method is: ImageData[25][37] = 0. [0003] In fact, one byte is used to store one pixel, and a bitmap is represented by a two-dimensional array. If this kind of bitmap is a...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the processing speed is slow and the storage space is wasted when image processing is performed in units of bytes in the prior art, so as to provide a relatively fast processing speed and save storage space for Bitmap processing method and system for infrared screen

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