PALMPRINT EXTRACTION METHOD AND DEVICE, STORAGE MEDIUM AND SERVER

摘要

A palmprint extraction method, comprising: acquiring an image of a palm, and preprocessing the image of the palm to obtain a palmprint image to be corrected (S100); calculating the curvature value of each feature pixel point in the palmprint image to be corrected, and on the basis of the curvature values of the feature pixel points, correcting the palmprint image to be corrected so as to obtain a corrected image (S200); and performing binarization processing on the corrected image to obtain a palmprint image (S300). In the described method, the image is preprocessed so that it is subsequently easier to extract palmprints, i.e. the palmprints of the palm are more prominently displayed, or the noise in the image of the palm is removed to avoid the influence of the noise on the extraction of palmprints. The display effect of the image is clearer, and the accuracy of subsequent palmprint extractions for the palm is improved. The pixel points are screened by means of the curvature value of each pixel point in the palmprint image to be corrected, which further improves the success rate of palmprint texture extraction.