By David Zhang, Hongzhi Zhang, Bob Zhang
This is the 1st publication supplying a scientific description of tongue snapshot research and processing applied sciences and their commonplace functions in automatic tongue diagnostic (CTD) structures. It positive factors the most up-tp-date study findings in all features of tongue snapshot acquisition, preprocessing, type, and diagnostic help methodologies, from theoretical and algorithmic difficulties to prototype layout and improvement of CTD platforms. The ebook starts with a truly in-depth description of CTD on a need-to-know foundation inclusive of an outline of CTD platforms and conventional chinese language medication (TCM) which will give you the details at the context and history of tongue photo research. The middle half then introduces algorithms in addition to their implementation tools, at a knowledge point, together with photograph segmentation equipment, chromatic correction, and category of tongue pictures. a few medical functions in response to those equipment are offered for the show-how function within the CTD examine box. Case reports spotlight various concepts which have been followed to help the visible inspection of appendicitis, diabetes, and different universal ailments. Experimental effects below assorted not easy scientific conditions have verified the very best functionality of those innovations. during this booklet, the rules of tongue picture research are illustrated with considerable graphs, tables, and functional experiments to supply insights into a number of the difficulties. during this means, readers can simply discover a speedy and systematic approach throughout the complex theories and so they can later even expand their experiences to big themes of curiosity. This booklet should be of profit to researchers, pros, and graduate scholars operating within the box of laptop imaginative and prescient, trend popularity, scientific perform, and TCM, in addition to these occupied with interdisciplinary research.
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Extra info for Tongue Image Analysis
5 Commonly used tongue geometric features. Reprinted from Wang and Zhang (2013b), with permission from Elsevier 26 2 Tongue Images Acquisition System Design geometric indexes which describe the tongue shape are crucial for diagnosis of several speciﬁc diseases (Maciocia, 2013). Also, other kinds of geometric features, including the width–length ratio, area of the tongue body, and inscribed-circle diameter, are frequently used for medical analysis. Moreover, the thickness of the tongue body is similarly found to be useful to reveal pathological changes of internal organs.
The aim of all steps is to maximize the accuracy and reproducibility of the imaging system. 1 Camera Lens Aperture The apertures of a camera lens need to be ﬁxed to avoid overexposure. Usually, it is achieved by setting the camera response to the largest value of 255 for a perfectly reflecting object (white board). , USA) was ﬁrst imaged by the system, and then, the average value of G channel (〈G〉) of a single or a group of pixels in the acquired images was checked. If it was lower than 255, the aperture needed to be enlarged, otherwise, it needed to be narrowed.
Various types of imaging cameras and lighting sources with diverse imaging characteristics were utilized. Therefore, the quality of the obtained tongue images considerably varies. This kind of inconsistent image representation makes images capture by different devices incompatible and noninterchangeable. Developed algorithms and obtained results based on these captured images would be unstable and inconvincible. Hence, a comprehensive test of the designed system to ensure their accuracy and stability is necessary.