Realization method and device for automatic focusing of early-stage cancer detection device

Abstract

This invention discloses a realization method and a device for automatic focusing of an early-stage cancer detection device. The steps of fine adjustment comprises: acquiring images of preset identifiers, wherein the preset identifier consist of a plurality of black stripes and a plurality of white stripes, and the preset identifier possesses a black gray value standard interval A and a white gray value standard interval B; b) acquiring the real gray values of all black stripes and the real gray values b of all white stripes; c) determining whether a and b respectively fall into the black gray value standard interval A and the white gray value standard interval B; and d) circulating until the a and the b respectively fall into the black gray value standard interval A and the white gray value standard interval B. Through the gray value comparison, the lens and the height of the lense can be adjusted automatically, which avoids manual operation and has high uniformity and adjustment accuracy.

Description

technical field [0001] The invention relates to a method and a device for realizing automatic focusing of a lens. Background technique [0002] Cancer is one of the most common fatal diseases in the world today. Millions of people die from cancer every year around the world. In the process of facing this century-old disease of cancer, human beings have never found effective treatments and drugs. [0003] The proliferation speed of cancer cells is calculated by doubling time, 1 becomes 2, 2 becomes 4...and so on. The average doubling time of gastric cancer, intestinal cancer, liver cancer, pancreatic cancer, and esophageal cancer is 31 days; the doubling time of breast cancer is more than 40 days. As cancer cells multiply, the more advanced the cancer, the faster it develops. [0004] Cancer can be divided into 3 stages, [0005] The first third can be prevented and cured; [0006] One-third of the symptoms can be alleviated through treatment, early detection and early tr...

AI Technical Summary

Problems solved by technology

[0013] 1) The formation process is seldom discovered. If hematuria and other discomfort signs are found to be checked again, it is often already in the middle and late stage

[0014] 2) After being magnified thousands of times under the microscope, a standard pathological slide needs about tens of thousands to millions of "fields of view". At present, the resources of expert doctors are scarce, and most of them are done in the case of "suspect" by outpatient doctors. Final diagnosis, impossible to achieve "screening"

[0015] 3) The examination process is extremely painful. The current examination method is mostly cystoscopy. For example, men need to insert from the front of the genitals to the bladder

[0016] 4) It is very easy to miss inspection - the bladder is an "inverted pear shape", the effective inspection area of ​​cystoscopy is only a few square centimeters, and the inner wall surface area is about thousands of square centimeters

[0018] The image acquisition system has the following disadvantages: a) the operation mode is manual adjustment, and the human hand needs to touch the lens fixing device, which is not suitable for instruments and equipment that work in a sealed environment such as early cancer detection systems; b) for early cancer detection Such a high-precision system with a large number of repetitive actions may have a large number of focusing actions, which will increase the burden on the operator; c) Each adjustment is determined by naked eye observation, and the height of the focusing lens every two times may not necessarily be adjusted. exactly the same

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