Multi-color deviation detection device for medical endoscope

Abstract

The utility model discloses a multi-color deviation detection device and method for a medical endoscope, belongs to the technical field of optical measurement, and aims to solve the problem of clinical operation safety caused by the fact that the deviation condition of each color of the endoscope in multiple colors cannot be detected by the existing color rendering index. The device is composed of a transmission-type standard color plate target, an integrating sphere standard light source, a to-be-detected endoscope clamp, a to-be-detected endoscope, a guide rail base, a black and white camera and an image processing computer. The guide rail base comprises an integrating sphere standard light source adjusting table, a clamp adjusting table and a black and white camera adjusting table, and the transmission type standard color plate target is placed in front of the integrating sphere standard light source; the integrating sphere standard light source is fixed on the integrating sphere standard light source adjusting table; an endoscope clamp to be tested is placed on the clamp adjusting table of the guide rail base; the monochrome camera is placed on the monochrome camera adjusting table; and the black-and-white camera is connected with the image processing computer, and an image acquired by the endoscope to be detected is displayed on a screen of the image processing computer through the black-and-white camera.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical measurement, in particular to a multiple color deviation detection device in a medical endoscope detection device, and is applied to the field of endoscope testing. Background Art

[0002] In recent years, with the deepening trend of an aging population and the continuous improvement of medical standards, the demand for medical endoscopes has been increasing. Minimally invasive surgery has attracted widespread attention due to its advantages such as small surgical incisions and rapid postoperative recovery. As a result, medical endoscopes have become one of the fastest-growing products in the global medical device industry. As the frequency of medical endoscope use in minimally invasive surgery continues to increase, people are also gradually paying attention to the safety and effectiveness of endoscopes in clinical applications. In particular, the ability of medical endoscopes to recognize multiple monochromatic lights directly affects surgical safety and involves the personal safety of patients, which deserves attention.

[0003] At present, my country is actively promoting the localization of medical devices, including medical endoscopes. At present, the only way to detect the color of endoscopes in China is to evaluate the visible light color rendering index. There are no detection devices and methods for various color deviation parameters in the development of medical endoscopes. Therefore, it is impossible to determine whether the production of endoscopes meets the design expectations in terms of multiple color recognition capabilities. There is a risk that the endoscope's multiple color recognition capabilities are unqualified, which increases the production cost of enterprises.

[0004] The paper "Research on Qualitative Detection Technology for Quality Control of Optical Performance of Medical Endoscopes" mentions the use of red, blue, and green color comparison cards to compare with image colors. This method is affected by factors such as the display and printer ink, resulting in large measurement errors.

[0005] Refer to the color reproduction calibration method proposed in YY0068.1-2008 "Medical Endoscopes Rigid Endoscopes Part 1: Optical Performance and Test Methods", which uses a comparison method of 8 standard test color samples to calculate the color rendering index and evaluate the color rendering index of the endoscope in the visible light band. However, it is unable to detect the deviation of each color of the endoscope under multiple colors, which in turn brings clinical surgical safety issues. Utility Model Content

[0006] In order to solve the problem that the existing color rendering index cannot detect the deviation of each color of the endoscope under multiple colors, thereby causing clinical surgery safety problems, the utility model proposes a multiple color deviation detection device for medical endoscopes.

[0007] The technical solution of this utility model to solve the technical problem is:

[0008] A device for detecting multiple color deviations of a medical endoscope, the device comprising a transmission-type standard color plate target, an integrating sphere standard light source, a fixture for the endoscope to be tested, the endoscope to be tested, a guide rail base, a black and white camera, and an image processing computer;

[0009] The guide rail base includes an integrating sphere standard light source adjustment platform, a fixture adjustment platform, and a black and white camera adjustment platform, and the adjustment range meets the test requirements of the endoscope to be tested;

[0010] The transmission type standard color plate target is placed in front of the integrating sphere standard light source;

[0011] The integrating sphere standard light source is fixed on the integrating sphere standard light source adjustment table;

[0012] The endoscope fixture to be tested is placed on the fixture adjustment table of the guide rail base;

[0013] The black and white camera is placed on a black and white camera adjustment table;

[0014] The black and white camera is connected to an image processing computer, and the image acquired by the endoscope to be tested is displayed on a screen of the image processing computer via the black and white camera.

[0015] The transmission type standard color plate target is used as an observation target; it consists of twenty-four color areas with the same transmittance.

[0016] The endoscope to be tested is a medical endoscope required for measurement.

[0017] The image processing computer is used to process the collected images, use the WeChat screenshot function, identify the image grayscale value of each color in the transmission standard color plate target twice before and after the endoscope to be tested is placed, and calculate the deviation of each color by dividing the grayscale value of each color after the endoscope to be tested is placed with the grayscale value of the corresponding color after the endoscope to be tested is placed.

[0018] The working process of the multi-color deviation detection device for medical endoscopes in the utility model is as follows:

[0019] Place the transmission type standard color plate target in front of the integrating sphere standard light source, and adjust the black and white camera to the appropriate angle and measurement distance so that the image of the transmission type standard color plate target is fully displayed on the image processing computer screen;

[0020] Observe the image on the image processing computer screen, adjust the adjustment stage on the guide rail base so that the white area of the transmission standard color plate target is exactly in the center of the image, and adjust the brightness of the integrating sphere standard light source so that the image grayscale of the white area of the transmission standard color plate target is exactly 255;

[0021] Adjust the integrating sphere standard light source adjustment stage so that each color on the transmission standard color plate target is located in the recognition area at the center of the image. The black and white camera directly captures each color of the transmission standard color plate target and records the grayscale value of each color.

[0022] Fix the endoscope to be tested on the endoscope fixture to be tested, and adjust the endoscope to be tested so that it is aligned with the transmission type standard color plate target;

[0023] Connect the eyepiece end of the endoscope to be tested to the bayonet of the black and white camera, observe the image on the image processing computer, adjust the position of the endoscope to be tested and the transmission standard color plate target, so that the white image of the transmission standard color plate target is in the center of the screen image again, and adjust the brightness of the integrating sphere standard light source again so that the image grayscale of the white area in the transmission standard color plate target is exactly 255;

[0024] Adjust the integrating sphere standard light source adjustment stage again so that each color on the transmission standard color plate target is located in the center of the image in turn, and record the grayscale value of each color;

[0025] Record the grayscale value of each color except white grayscale before and after the endoscope is installed, calculate and obtain the deviation of each color of the endoscope, and complete the multi-color deviation detection of the endoscope.

[0026] Beneficial effects of the utility model:

[0027] This method first uses a camera to collect the grayscale values of each color module in the standard color plate target pattern, then installs the endoscope to be tested, adjusts the brightness of the light source until the grayscale of the white image is just 255 saturated, and avoids the grayscale error caused by the endoscope's own transmittance. The camera connected to the endoscope to collect the grayscale values of each color again and calculates and compares the results of the first collection to achieve deviation measurement of medical endoscopes under multiple colors.

[0028] The implementation of this method can ensure that the various color deviations of endoscopes can be compared and analyzed during the research and development process, providing medical endoscope manufacturers with a more comprehensive endoscope color measurement and evaluation method, better understanding the difference between design values and actual values, and then finding ways to improve the endoscope production process.

[0029] This method can also serve as a supplement to the color reproduction capabilities of endoscopes, such as those in the YY0068.1-2008 industry standard, to more objectively and comprehensively evaluate the color deviation of endoscopes. With the development of the endoscope industry, this method is a supplement to the measurement methods of endoscope optical parameters. It is simple and convenient to operate, adding color parameter measurement methods to the endoscope R&D process of enterprises, and has important guiding significance for the color deviation measurement of medical endoscopes and other optical lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The utility model is a structural schematic diagram of a device for detecting multiple color deviations of a medical endoscope.

[0031] Figure 2 This is the transmission type standard color plate target pattern described in the present invention.

[0032] Figure 3 The black and white camera image acquisition system of the present invention directly acquires the transmission type standard color plate target image.

[0033] Figure 4 The black and white camera image acquisition system of the present invention acquires a transmission type standard color plate target image after imaging by a medical endoscope. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0035] like Figure 1 As shown, a device for detecting multiple color deviations of a medical endoscope is composed of a transmission-type standard color plate target 1, an integrating sphere standard light source 2, a fixture for the endoscope to be tested 3, the endoscope to be tested 4, a guide rail base 5, a black and white camera image acquisition system 6, and an image processing computer 7;

[0036] The guide rail base 5 includes an integrating sphere standard light source adjustment platform 5-1, a fixture adjustment platform 5-2, and a black and white camera adjustment platform 5-3, and the adjustment range meets the test requirements of the endoscope 4 to be tested;

[0037] The transmission type standard color plate target 1 is used as the observation target; it consists of 24 color areas with the same transmittance; it is placed in front of the integrating sphere standard light source 2;

[0038] The integrating sphere standard light source 2 can achieve different brightness adjustments with a color rendering index close to 100%, and is fixed on the guide rail base 5;

[0039] The integrating sphere standard light source 2 is fixed on the integrating sphere standard light source adjustment platform 5-1;

[0040] The endoscope fixture 3 to be tested is placed on the fixture adjustment platform 5-2 of the guide rail base 5;

[0041] The endoscope 4 to be tested is a medical endoscope required for measurement;

[0042] The black and white camera 6 is placed on the black and white camera adjustment platform 5-3;

[0043] The black and white camera 6 displays the image formed by the endoscope to be tested on the screen of the image processing computer 7 through the camera;

[0044] The image processing computer 7 is used to process the collected images, use the WeChat screenshot function to identify the image grayscale value of each color in the transmission standard color plate target 1 twice before and after the endoscope is placed, and calculate the deviation of each color by dividing the grayscale value of each color after the endoscope to be tested 4 is placed with the grayscale value of the corresponding color after the endoscope to be tested 4 is placed;

[0045] The working process of a multiple color deviation detection device of a medical endoscope detection device includes the following steps:

[0046] Step 1: Place the transmissive standard color plate target 1 in front of the integrating sphere standard light source 2, and adjust the black and white camera 6 to a suitable angle and measurement distance so that the image of the transmissive standard color plate target 1 is fully displayed on the screen of the image processing computer 7;

[0047] Step 2: Observe the image on the screen of the image processing computer 7, adjust the adjustment stage on the guide rail base 5 so that the white area of the transmission type standard color plate target 1 is exactly at the center of the image, and adjust the brightness of the integrating sphere standard light source 2 so that the image grayscale of the white area of the transmission type standard color plate target 1 is exactly 255;

[0048] Step 3: Adjust the adjusting stage of the integrating sphere standard light source 2 so that each color on the transmission standard color plate target 1 is located in the recognition area at the center of the image. The black and white camera 6 directly captures each color of the transmission standard color plate target 1 and records the grayscale value of each color.

[0049] Step 4: Fix the endoscope 4 to be tested on the endoscope fixture 3, and adjust the endoscope 4 to be tested so that it faces the transmission type standard color plate target 1;

[0050] Step 5: Connect the eyepiece end of the endoscope to be tested 4 to the bayonet of the black and white camera 6, observe the image on the image processing computer 7, adjust the position of the endoscope to be tested 4 and the transmission type standard color plate target 1 so that the white image of the transmission type standard color plate target 1 is again in the center of the screen image, and adjust the brightness of the integrating sphere standard light source 2 again so that the grayscale of the image of the white area in the transmission type standard color plate target 1 is exactly 255;

[0051] Step 6: Adjust the integrating sphere standard light source 2 adjustment stage again so that each color on the transmission standard color plate target 1 is located in the center of the image in turn, and record the grayscale value of each color;

[0052] Step 7: Record the grayscale value of each color except the white grayscale before and after the endoscope 4 is installed, calculate and obtain the deviation of each color of the endoscope, and complete the multi-color deviation detection of the endoscope.

[0053] The utility model successfully ensures the detection of multiple color deviations of medical endoscopes, adds a new evaluation method for the color reproduction of endoscopes, meets the needs of enterprises for endoscope research and development, and is a supplement to its testing and calibration methods with the development of endoscopes. The test can be completed on a designated device, and the operation is simple and convenient, which improves the detection accuracy and repeatability. It has important guiding significance for the detection process of medical endoscopes and the inspection of other optical devices.

Claims

1. A device for detecting multiple color deviations of a medical endoscope, characterized in that: The device is composed of a transmission type standard color plate target (1), an integrating sphere standard light source (2), a clamp for an endoscope to be tested (3), an endoscope to be tested (4), a guide rail base (5), a black and white camera (6) and an image processing computer (7); The guide rail base (5) includes an integrating sphere standard light source adjustment platform (5-1), a fixture adjustment platform (5-2), and a black and white camera adjustment platform (5-3), and the adjustment range meets the test requirements of the endoscope (4) to be tested; The transmission type standard color plate target (1) is placed in front of the integrating sphere standard light source (2); The integrating sphere standard light source (2) is fixed on the integrating sphere standard light source adjustment platform (5-1); The endoscope fixture (3) to be tested is placed on the fixture adjustment platform (5-2) of the guide rail base (5); The black and white camera (6) is placed on a black and white camera adjustment platform (5-3); The black and white camera (6) is connected to an image processing computer (7), and the image acquired by the endoscope to be tested (4) is displayed on the screen of the image processing computer (7) through the black and white camera (6).

2. A device for detecting multiple color deviations of a medical endoscope according to claim 1, characterized in that: The transmission type standard color plate target (1) serves as an observation target; it is composed of twenty-four color areas with the same transmittance.

3. The device for detecting multiple color deviations of a medical endoscope according to claim 1, characterized in that: The endoscope to be tested (4) is a medical endoscope required for measurement.

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