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Picture file processing method and intelligent terminal

一种文件处理、图片的技术，应用在图像处理领域，能够解决压缩图像数据大、不利图片存储以及传输等问题

Active Publication Date: 2017-08-18
TENCENT TECH (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, when encoding and compressing pictures including transparency data, the obtained compressed image data is relatively large, which is not conducive to the storage and transmission of pictures

Method used

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  • Picture file processing method and intelligent terminal
  • Picture file processing method and intelligent terminal

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Embodiment Construction

[0085] In the embodiment of the present invention, when encoding and compressing pictures, a video encoding and compression method is used to compress pictures, and a video encoder and a video decoder are used to encode and decode pictures including Alpha data. In the video encoder, lossy coding or lossless coding can be used to encode the Alpha data of the picture.

[0086] A video encoder generally includes a Y channel, a U channel, and a V channel, and the video encoder completes encoding and compression of video frames based on these three channels. Among them, Y is the luminance signal, indicating the brightness, that is, the gray scale value, U and V are two color difference signals, which are used to describe the color and saturation of the image, and are used to specify the color of the pixel. In the embodiment of the present invention, the Alpha data of the picture may be encoded by using the Y channel of the video encoder. In other embodiments, the Alpha data of the...

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PUM

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Abstract

The embodiment of the invention discloses a picture file processing method and an intelligent terminal. A coding method comprises the following steps: selecting a transparency input value when coding transparency data of a picture; coding the transparency input value as target channel data of a video encoder to obtain transparency code stream data; and outputting the transparency code stream data. Compressed image data of the picture includes the transparency code stream data and color code stream data of the picture, and the color code stream data indicates the data obtained by coding the color data of the picture through the video encoder. By adopting the picture file processing method and the intelligent terminal disclosed by the embodiment of the invention, the traffic bandwidth and storage cost of the pictures with Alpha channels can be saved to a certain extent, the picture compression efficiency can be improved, and the coding and decoding time can be saved.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to an image file processing method and an intelligent terminal. Background technique [0002] With the development of the mobile Internet, the download traffic of terminal devices has increased significantly, and picture traffic accounts for a large proportion of the traffic downloaded by users. A large number of pictures also put a lot of pressure on the network transmission bandwidth load. If the image size can be reduced, it will not only increase the loading speed, but also save a lot of bandwidth and storage costs. [0003] Currently, there are two ways to reduce the image size. One is to reduce the image quality, such as reducing the image quality of jpeg (Joint Photographic Experts Group, Joint Photographic Experts Group) from jpeg80 to jpeg70 or even lower. Although this can save bandwidth, the image The quality is also greatly reduced, which greatly a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/2343H04N21/4402
CPCH04N21/234318H04N21/234336H04N21/440218H04N21/440236H04N19/172H04N19/42H04N19/44H04N21/44008H04L69/22H04N21/235H04N21/2365H04N19/21H04N19/186H04N19/107H04N21/234H04N19/467H04L65/70
Inventor 黄晓政
Owner TENCENT TECH (SHENZHEN) CO LTD