Method and device for removing image fingers based on fixed region

Abstract

The present invention provides a method and device for removing an image finger based on a fixed area. The method includes: collecting a Rect area image of a predetermined area in an image; splitting the Rect area image into an upper Rect area sub-image and a lower Rect area sub-image; The image of the upper edge area of ​​the sub-image of the Rect area is the original image, and the sub-image of the upper Rect area is filled; the image of the lower edge area of ​​the sub-image of the Rect area below is the original image, and the sub-image of the lower Rect area is filled; the sub-image of the upper Rect area and The junction of the sub-images in the lower Rect area. First, the position of the finger is limited by frame selection, and then the range of the frame selection is projected and filled, and the color penetration is carried out at the splicing of the upper and lower projections, so as to achieve smooth processing at the splicing. With the above solution, no matter what kind of environment we collect images and not subject to the pressing of a finger with a fixed skin color, we can realize the mapping and filling in the frame selection area, and realize the versatility and accuracy of finger removal.

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

Images