Seal Detection Technology Based On Optical Image Processing

Also known as stamp seals, or seals, whose imprint is a two-dimensional image. Seal in the vast and profound cultural influence by the Chinese state and region has an extremely wide range of applications. In China, the seal's role in social life is very important. With the continuous development of computer graphics technology, forged very easy to seal, leading to a wrongful act caused by counterfeit seals have occurred. Seal the authenticity of detection technique is to use a computer digital image processing technology, scientific, and accurate identification, and provide society with an efficient technical support,Can effectively reduce such wrongful act or effectively to the cultural history of the disputed paintings were identified.Two-dimensional image of detection algorithms and filtering techniques used by many scholars at home and abroad has made a number of relevant research results, but there are still some deficiencies and some problems to be solved. In this paper the analysis, drawing on some of the more sophisticated algorithms at home and abroad, based on the stamp mark on the authenticity of identification techniques for filtering technique was studied.Paper analyzes the conditions of seal imprint stamped as a result of artificially low image quality characteristics to achieve several detection methods, the corresponding results obtained. At the same time proposed a new detection methods, that is the basis of Fourier transform, using a new type of filter band-pass filter, to get a new image of time as a variable, for similarity statistics, so as to arrive their similarity over time was studied.This paper has the following tasks:1,Seal engraving process analysis and image preprocessingSeal engraving process steps and details can affect the characteristics of seal, thereby affecting its wear using the process changes and other changes and so on.Mark image collection. Image acquisition methods are usually flying spot scanners, television cameras (cameras), scanners and remote sensing equipment such as infrared scanners, multispectral scanners.The subject content of the study does not require the collection of real time image processing, so the scanner can be very good to meet the needs of the subject.2, Iimage preprocessingSeal image preprocessing mainly for image segmentation and noise removal, etc.. Purpose of segmentation is to identify objects and to separate the background and eventually obtain a binary image after segmentation. As the emphasis on research paper seal calligraphy and painting, so much noise in most cases.3, Seal testing in the design of the new filterIn order to scholars and the conclusions and methods have been in sharp contrast to the subject in the course of this process in the filter to do the bold taste of knowledge, to design a Fourier transform only in band-pass filter of the new filter. Thus completed the following testing.4, The research scholars have been content merely referred to the seal in the presence of the historical process, the process being used, must change its own, such wear, broken, etc., but did not sum up the changes of. Summed up this issue in several cases, the similarity of its seal imprint variation with time, as the seal of the test provided a good reference.