Research On Image Processing Arithmetic And Control Strategy Of Bill Sorter

Bill sorter, which is fast been developing lately, is an optical, mechanical and electrical financial facility. In this paper, on the basis of the practice of developing the bill sorter, with the digital image processing theory and the advanced design theory's guidance, and aimed at the deficiency of the existent bill sorters and the developmental current of the bill sorter, the author makes a thorough study on the key technology, brings forward a new classification arithmetic of the new and used bills, and with the advanced chip (ARM/DSP dual kernel chip), optimizes the design of the system in the control part. Accordingly, the effect of the classification is greatly improved. The paper consists of the following parts:1. The design of the image processing arithmetic. Firstly, With the main study methods of the digital image processing, analyse the bill's image characters. Then, on the basis, bring forward the classification arithmetic of the new and used bills based on distilling besmirchment characters by means of the histogram of image segmentation and morphogical processing of image segmentation. Because of the deficiency of including the less new and used information and the lower resolution in the native homologue, this arithmetic greatly improves in this point and primly recognizes the few dirty dots and lines, considering the velocity. At last, on the basis of the actual state, improve on the better one in the all homothetic arithmetic, consequently, realize other functions of" the bill sorter-denomination recognition, edition recognition and orientation recognition.2. The methods of the classification and the error analysis. First, introduce two classification methods adopted by this system-LVQ nerve network and curvilinear correlation. Then, analyse the composite error of the system classification and build the method, which can evaluate image collection effect of the hardware system on the basis of calculating curvilinear correlation.3. The system analysis and the layout of the control strategy. On purpose of improving the whole system productive efficiency, firstly build two simple mathematics models. Then, based on this point, analyse detailedly the key factors which determine the system running velocity. Besides, with the multiprocessor parallel design theory's guidance, bring forward several system parallel design projects. At last, expatiate on the idiographic design projects of the hardware and software system of the bill sorter. Because of adopting the multiprocessor parallel design, adopting the current advanced chip (ARM/DSP dual kernel chip) as the main processor, and aimed at the characters, optimizing the control system, guarantee the advantage of the control system.