Pulse diagnosis curve grid eliminating method based on frequency domain processing

Abstract

The invention relates to a pulse diagnosis curve grid eliminating method based on frequency domain processing. The method includes first conducting quick Flourier transformation on a pulse diagnosis curve image, conducting phase shifting to take the logarithm to obtain a logarithm spectrogram; then conducting binarization on the logarithm spectrogram, modifying the logarithm spectrogram according to the position that the highlighting portion in the logarithm spectrogram subjected to binarization, and modifying the value of the corresponding position to be 0 to obtain the spectrogram without a grid; finally conducting Flourier inversion on the frequency domain images without the grid, conducting binarization on the images subjected to inversion, and then using a SUSAN filtering method to process dotted noise in the binarization images without the grid to obtain a better pulse diagnosis curve image without the grid. The method overcomes the shortcoming that the grid of the scanning pulse diagnosis curve image based on frequency domain processing cannot be eliminated completely, and is wide in application range.

Description

technical field The invention belongs to a method for removing background grid lines before digital extraction of pulse diagnosis curve images, in particular to a method for removing grid lines of pulse diagnosis curve images processed in the frequency domain. Background technique The study of medical curves has always been an important work in the fields of physiology, pathology, and biomedical engineering. Since most of the medical curves in the past used paper as the medium and adopted the "archive" management mode, this storage method has several major disadvantages, such as easy damage to the data, color fading, and cumbersome management. It is difficult to query and Maintenance, it is not easy to connect and integrate with the hospital information database. In order to solve this problem, it is necessary to conduct digital research on medical curves to lay the foundation for the development of hospital digitalization and informationization. When digitizing the puls...

AI Technical Summary

Problems solved by technology

When digitizing the pulse diagnosis curve, we need to scan the existing paper pulse diagnosis curve or obtain the image of the pulse diagnosis curve by means of a digital camera. The background of the image is usually a regular grid, and the target pulse diagnosis curve and grid Overlapping, if the coordinate grid is not removed, it will seriously affect the effect of curve extraction

Images