Intelligent assistant diagnosis system for skin ulcer with machine vision 3D reconstruction technique

Abstract

The invention relates to an intelligent assistant diagnostic system for skin ulcer with a machine vision 3D reconstruction technique. A calibration method is adopted and the internal and external parameters of two cameras are obtained respectively; through a set of fixed points in the same world coordinate system, the position relation between the two cameras is set up, through a 3D reconstructionmodel, the color feature of a wound surface, a 3D surface area feature and a texture feature of the wound surface are digitally extracted, at the same time, the color characteristics of the ulcer wound in traditional Chinese medicine are digitally converted, and the therapeutic effect is dynamically evaluated by using the change of skin wound characteristics. The intelligent assistant diagnosticsystem has the advantages that the surface shape and surface area information of chronic wound surface can be calculated directly, which provides the digitized basis for the diagnosis and treatment ofulcer in traditional Chinese medicine, so as to create a more direct and convenient observation and evaluation method for the diagnosis and treatment of chronic ulcer, at the same time, the system accumulates 3D image information, thus establishing a first digital differentiation AI resource database of skin ulcer in the whole process of treatment.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an intelligent auxiliary diagnosis system for skin ulcer wounds with machine vision three-dimensional reconstruction technology. Background technique [0002] Chronic refractory wounds caused by various reasons, due to skin defects and limited functions, seriously affect the quality of life of patients and bring great burdens to patients and their families. By far the most common causes include diabetic ulcers, pressure ulcers, traumatic ulcers, varicose ulcers, etc. [0003] In the process of skin defect repair, accurate measurement of the wound surface is crucial for evaluating the treatment effect and judging the prognosis. At present, the commonly used clinical wound evaluation techniques mainly include the sterile film outlining method, the ruler method, the filling method, the three-dimensional reconstruction measurement method, and the ulcer wound color card. How...

AI Technical Summary

Problems solved by technology

The disadvantages are: troublesome operation, can not reflect the depth of the wound, increase the risk of infection, large measurement error

[0008] The NIH Image J method takes pictures with the ruler and the wound on the same plane, and then outlines it with Image J software, and converts pixels to quantify the size of the wound. This method avoids physical contact and is more accurate for relatively flat two-dimensional wounds. When the wound surface is not on the same plane, the measurement error is obviously larger

Moreover, the division of the wound boundary is also artificially divided, which has a great subjective influence

[0009] The advantage of the ruler measurement method is that the clinical operation is relatively fast and can be quickly quantified, but the disadvantage is that the error of the plane wound is small, but the curved wound cannot be measured, and the operation steps are many

This method is simple and feasible, but it is also easy to increase the risk of wound infection, and it is easy to cause pain or even bleeding when removing the sterile film

[0012] The advantage of the filling method is that it can reflect the actual volume of the skin defect and the shape and size of the deep defect, but the disadvantages are: the operation is complicated, the patient has pain, and there is a potential risk of infection

[0015] The advantages of the three-dimensional wound measurement method are: it can measure the curved surface wound, reflect the depth of the wound, the data is accurate and objective, the operation is convenient, and the measurement speed is fast, but the disadvantage is that the equipment requires high

However, there are no reports about this diagnostic system and measurement method.

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