The principle and application of hyperspectral imaging technology in detection of handwriting

Abstract

Hyperspectral imaging technology is used to recognize handwriting, to restore the original data, and to reappear the same color masking handwriting. After extracting the characteristic bands, we can make a preliminary distinction between the sample data. Each sample was then subjected to noise reduction, IsoData, the establishment of eye mask, removal of background and PCA analysis. Combined with mathematical statistics analysis, the method of identifying tampering handwriting and reproducing cover handwriting is put forward.18 kinds of brand black neutral pen and 15 brands of blue neutral pen were analyzed. A preliminary study is made on the erasable neutral pen.