Preprocessing method for breast region extraction in breast molybdenum target X-ray image

Abstract

The invention provides a preprocessing method for breast region extraction in a breast molybdenum target X-ray image. The method has the advantages that the position of the breast region in the image can be determined through using the characteristics of uneven pixel density distribution on the left side and right side in the image, and determination errors possibly caused by vertical unexposed frames on the left side and the right side in the image and horizontal unexposed frames on the top and bottom in the image can be eliminated, so that the result for determining the position of the breast region can be accurate, and the breast region extracted from a subsequent breast region extraction process can be more precise; and peeling treatment can be carried out on the left side or the right side vertical unexposed frames which are directly connected with the breast region, and on top and bottom horizontal unexposed frames as well, so that the unexposed frames are thoroughly removed, and the breast region cannot be communicated with the unexposed frames so as to effectively improve the extraction precision of the breast region. The preprocessing method has low calculation complexityand high execution efficiency.

Description

technical field [0001] The invention relates to a medical image processing method, in particular to a preprocessing method for extracting mammary gland regions in mammography X-ray images. Background technique [0002] In mammogram X-ray images, the extraction of mammary gland region can help in-depth analysis and processing of mammogram X-ray images, specifically in four aspects: (1) High-definition display of images requires mammography The breast tissue pixels in the target X-ray image are accurately analyzed; (2) The layout of the display window of the mammogram X-ray image must comply with the hanging film agreement, and the analysis of breast tissue can provide the basis for the automatic window layout during display; (3 ) In the process of computer-aided diagnosis, the influence of the background area can be eliminated by extracting the mammary gland area, the accuracy of the auxiliary diagnosis can be improved and the calculation time can be reduced; The background ...

AI Technical Summary

Problems solved by technology

However, in addition to this, when directly extracting breast regions from mammography images, there are usually some interference factors, such as vertical unexposed frames and horizontal unexposed frames connected to breast regions, the existence of these unexposed frames will It will greatly affect the accuracy of breast region extraction, and even bring difficulties to the extraction of breast regions. The existing breast region extraction methods have not completely eliminated these unexposed borders, resulting in inaccurate breast region extraction.

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