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Method and apparatus for generating composite image and information processing system

A key information and image technology, applied in image data processing, image communication, 2D image generation, etc., can solve the problems of synthetic image quality deterioration and no advantages

Inactive Publication Date: 2003-11-05
SONY COMPUTER ENTERTAINMENT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0037] However, this image synthesis method using α information has no advantage in that it should additionally use separate information from the original image
Also, the image synthesizing method using a key signal extracted from an image of a pure color having a specific color has the disadvantage that when the original image has been subjected to image processing such as low-pass filtering, multiple images are mixed using such a key signal instead of The quality of the resulting composite image deteriorates

Method used

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  • Method and apparatus for generating composite image and information processing system
  • Method and apparatus for generating composite image and information processing system
  • Method and apparatus for generating composite image and information processing system

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Embodiment Construction

[0055] Before describing the embodiments of the present invention, it will be described that a key signal is generated using a pure color as a specific color, which is the basis of the image synthesis method and device and the information processing system according to the present invention.

[0056] Figure 6 Schematically shows how to use a pure color as a specific color to generate a "pure color hollow image". To simplify illustration and description, the following description will be given using a one-dimensional graphic image for convenience of explanation.

[0057] A first image 61 forming the foreground of the composite image 64 is shown, and a second image 62 is also shown as the background of the composite image 64 . Also shown is a key signal 63 which provides a shift between the foreground image and the background image of the composite image 61 when a portion of the first image 61 having a particular color (e.g. a color with a pixel value of 0) is treated as a sol...

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Abstract

The key signal extracted from the first original image and the first original image are subjected to image processing, and the processed first original image and a second original image are mixed by using the processed key signal to provide a new synthetic image, which can effectively The quality of this new composite image is prevented from being deteriorated.

Description

technical field [0001] The present invention relates to a method and device for mixing multiple images to produce a new image, and an information processing system associated with the method and device. Background technique [0002] In graphics computers, game devices, video devices, etc., multiple images are mixed using the blending ratio information to compose a new image. [0003] In order to synthesize a new image from a mixture of a plurality of images, it has been proposed to equip a key signal with information called "α (alpha) information" respectively provided from a plurality of images, and to incorporate the Specific pixel values ​​are used as key signals. [0004] Alpha information is two-dimensional information having the same resolution as an image and having values ​​from 0 to 1. For example, when the image resolution is 640×480, α information has a resolution of 640×480. Also, when the statistic number of bits specifying α information is 2, for example, α ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/00
CPCG06T11/001
Inventor 冈正昭
Owner SONY COMPUTER ENTERTAINMENT INC