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Method for fast painting image and video

An image and video technology, applied in the field of image information processing, can solve problems such as poor interactivity, border color confusion, slow speed, etc., to achieve the effect of improving efficiency and solving color confusion

Inactive Publication Date: 2009-07-08
SOUTHEAST UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The purpose of the present invention is to solve the shortcomings of the existing coloring technology: slow speed, border color confusion, poor interactivity, etc., to provide an image with real-time interaction, comprehensive analysis of brightness and texture modes, and adding boundary and gradient constraints and video fast colorization method

Method used

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  • Method for fast painting image and video
  • Method for fast painting image and video

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Embodiment Construction

[0022] Such as figure 1 As shown, the input of the coloring algorithm of the present invention can be a grayscale image, a color image or video data. For the video data, the scene segmentation needs to be performed first, and then the coloring process is performed on the first frame image of the continuous segment of the same scene. The user can Interactively add color strokes on the image, the coloring module combines edge constraints and texture pattern analysis, calculates the shortest path from a pixel point to a color point through energy definition, and then performs color mixing to calculate the color value of each pixel point, and real-time If you are not satisfied with the local results, you can redraw or modify the color until the results are drawn. For video coloring, the gradient of brightness on the time axis is also used to calculate the color gradient and color the remaining frames.

[0023] In order to facilitate a deep understanding of the technical content o...

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Abstract

A method for rapid coloring images and videos relates to a method for coloring a gray image and a gray video into a colored image and a colored video, as well as re-coloring a colored image and a colored video. The method comprises the following steps: a small amount of color information is sketched by a user on the gray image; the local connection energy of a pixel is defined on the basis of the edge analysis and the analysis of texture pattern; the two-dimensional dynamic programming algorithm is adopted for calculating the minimum distance from the pixel to all known color points; and the distance is taken as a weight by which colors are mixed. The coloring method provided by the invention is rapid, and can enable the user to obtain a coloring effect picture in a real-time manner, thereby realizing interactive editing of the coloring effect picture. Due to a changing gradient of a color on a time axis, coloring is extended to the video. The re-coloring of the colored image can be realized by comprehensive constraint of color and brightness.

Description

technical field [0001] The invention relates to a fast coloring method for images and videos, in particular to a method for coloring grayscale images and videos into color images and video screens, and recoloring color images and videos. It belongs to the field of image information processing. Background technique [0002] Adding color information to black-and-white photos, classic black-and-white movies, scientific data maps, etc. will greatly improve the visual appeal. In addition, recoloring existing color images and videos is also an urgent need for film and television workers. Colorization (Colorization) was proposed by Wilson Markle in 1970. It was originally used in the film industry. Now it generally refers to adding color information to static images and dynamic videos. It is a method that adds three-dimensional color information to only one-dimensional brightness. The process of an image or video (ie, a continuous series of images) of information. Because differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/00
Inventor 姚莉吉逸
Owner SOUTHEAST UNIV
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