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Method for compressing and displaying picture including transparent information

A transparent information and picture technology, applied in image communication, digital video signal modification, television, etc., can solve the problems of slow data processing, slow drawing speed of occupying space, long waiting time for displaying pictures, etc.

Inactive Publication Date: 2011-11-16
HANGZHOU DIANNENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of slow data processing, long waiting time for displaying pictures, and large storage space occupied by pictures containing transparent information in the prior art when decoding and drawing pictures containing transparent information, and provide a method that takes up less space. A method for converting large, slow-drawing pictures with transparent information into pictures that take up less storage space and faster drawing speeds, and then compress, store, and display them on various terminal devices

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021]A method for compressing and displaying images containing transparent information. Taking the original image as a PNG file and the terminal device as a handheld terminal as an example, the handheld terminal can be specifically a mobile phone, a PDA, a handheld game console, etc. that have computing and graphics display functions. Terminal equipment; At first, target picture is set as special-purpose format in handheld terminal, is set as SLG file in the present embodiment, and complete SLG file should be made of following parts: SLG file header data block, palette data block , alpha channel value table, image data block, end information code and check code, and optional auxiliary information block; build a dedicated decoding library and a dedicated drawing library in the handheld terminal, and the dedicated decoding library and dedicated drawing library are based on the composition of the SLG file Build, start the initialization of the handheld terminal, call the built-in...

Embodiment 2

[0023] A method for compressing and displaying images with transparent information, taking the original image as a TIFF file as an example; the handheld terminal also needs to establish a dedicated decoding library and a dedicated rendering library, the basic process is similar to the method of compressing, storing and displaying PNG format images on a handheld terminal , the difference is that when the handheld terminal reads a TIFF file, the handheld terminal needs to call the TIFF decoding library, and read the alpha channel value according to the settings of the TIFF decoding library for run-length encoding, and create an alpha channel value table.

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PUM

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Abstract

The invention relates to a method for compressing and displaying a picture including transparent information, which can be used for well solving the problems of larger occupation space and slower drawing speed in the prior art, wherein a special decoding library and a special drawing library are established on terminal equipment firstly; then, an original picture of the picture including transparent information is compressed, stored and displayed on the terminal equipment by the following steps of: step 1, reading the original picture and decoding the original picture by the terminal equipment; step 2, newly establishing a corresponding target picture; step 3, reading alpha channel values to form an alpha channel value list; step 4, storing colour data; step 5, inputting auxiliary information of the original picture in the target picture; step 6, storing; and step 7, transferring the special decoding library and the special drawing library to display the target picture. By means of the invention, the picture including transparent information can be converted into a picture having small storage occupation space and rapid drawing speed so as to be compressed, stored and displayed.

Description

technical field [0001] The present invention relates to a method for compressing and displaying a picture containing transparent information, in particular to a method for converting a picture containing transparent information that takes up a large space and draws slowly into a picture that occupies a small space and has a fast drawing speed in each A method for compressing, storing and displaying on a terminal device. Background technique [0002] At present, among various terminal devices, handheld terminals are widely used in many fields. For example, PDAs and mobile phones are currently widely used handheld terminals, but general handheld terminals have a relatively big problem, namely In order to maintain portability, the computing performance, storage space, and transmission speed of handheld terminals are often inferior to large-scale equipment such as computers, so it is often time-consuming and laborious to process a large amount of data. For large image data con...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N19/112H04N19/115
Inventor 龙小平张志文
Owner HANGZHOU DIANNENG TECH
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