Method and device for removing image finger based on fixed areas

Abstract

The invention provides a method and device for removing an image finger based on fixed areas, which comprise the following steps of: acquiring a Rect area image in a predetermined area; splitting theRect area image into an upper Rect area sub-image and a lower Rect area sub-image. The original image is the image of the upper edge area of the upper Rect area sub-image in order to fill the upper Rect area sub-image, the image of the lower edge area of the lower Rect area sub-image is the original image, and the lower Rect area sub-image is filled. The treatment with color permeation is carriedout at the junction of the sub-image of the upper Rect area and the sub-image of the lower Rect area. Firstly, the position of the finger is framed and limited, and then the range of the selected frame is projected and filled, and the color permeation on each other at the splicing position of the upper and the lower projection is carried out so as to realize the smooth processing at the splicing position. By adopting the scheme, no matter what environment is required for image acquisition, the mapping filling in the frame selecting region can be realized without being subject to the pressing of the fixed skin color finger, and the universality and the accuracy of removing the finger are realized.

Description

technical field [0001] The invention relates to a method for removing foreign matter in a computer image, in particular to a method and a device for removing fingers in a fixed area in a document image captured by a high-speed camera. Background technique [0002] The objects in the image acquisition process often need to be pressed by fingers to ensure complete imaging, especially in the process of scanning documents and books with high-speed cameras and other non-contact scanning devices. Fingers in the image need to be removed to keep the image clean. [0003] The currently used method is to remove the finger based on the algorithm of skin color detection, and judge the color in the image according to the preset threshold in the color space RGB and HSV. There are certain limitations in adopting the above solution. This method will have different differences in skin color of individuals, and similar colors of skin color in the image cannot be effectively distinguished. I...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for removing a finger from an image based on a fixed area, so as to solve the problem that the finger in the current image is easy to be detected incorrectly, resulting in the problem that the finger in the image cannot be removed

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