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A bitmap scaling method and system

A bitmap and scaling technology, applied in the direction of image data processing, graphics and image conversion, instruments, etc., to achieve the effect of improving display quality

Inactive Publication Date: 2016-05-04
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a bitmap scaling method and system for the existing bitmap scaling technology, the technical problem of obvious squares appearing between the target bitmap and the original bitmap after scaling

Method used

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  • A bitmap scaling method and system

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as figure 1 Shown is a working flow diagram of a bitmap scaling method of the present invention, which is used to scale the original bitmap into a target bitmap, including:

[0022] Step S101, calculating the proportion of each original bitmap pixel contained in each target bitmap pixel;

[0023] Step S102, calculating the color parameter of each target bitmap pixel as the weighted value of the color parameter of each original bitmap pixel included, and the weight of the color parameter of each original bitmap pixel is each The ratio of the original bitmap pixels to the target bitmap pixels.

[0024] Wherein, the specific calculation method of step S101 is as follows:

[0025] Calculate the geometric abstract area of ​​the target bitmap pixel for each pixel of the target bitmap;

[0026] Calculate the ratio of the geom...

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Abstract

The invention relates to the related technical field of picture processing, in particular to a bitmap scaling method and system. The bitmap scaling method is used for scaling an original bitmap to an objective bitmap and comprises the following steps: calculating the ratio of pixel points of each original bitmap contained in pixel points of each objective bitmap; calculating color parameters of the pixel points of each objective bitmap as the weighted value of color parameters of the pixel points of each contained original bitmap. The weight number of the color parameters of the pixel points of each original bitmap is the ratio of the pixel points of each original bitmap to the pixel points of the objective bitmap. Due to the facts that a weighted average method between the adjacent pixel points is adopted, and picture continuity between the adjacent pixel points is considered, displaying quality after picture scaling is improved.

Description

technical field [0001] The present invention relates to the related technical field of image processing, in particular to a bitmap scaling method and system. Background technique [0002] The traditional method of scaling a bitmap is to double fill the same pixel or sample pixels equidistantly. Since the continuity of image information between adjacent pixels is not considered, it will cause a square image after zooming. The phenomenon is obvious, and the above method can only scale the image by a certain multiple. Contents of the invention [0003] Based on this, it is necessary to provide a bitmap scaling method and system for the existing bitmap scaling technology, which has the technical problem that obvious blocks appear between the target bitmap and the original bitmap after scaling. [0004] A bitmap scaling method for scaling an original bitmap to a target bitmap, consisting of: [0005] Calculate the proportion of each original bitmap pixel contained in each tar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40
Inventor 霍永强田原
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD