Camera autofocus method and device, analysis instrument and storage medium
An automatic focusing and camera technology, applied in the field of image processing, can solve the problems of low image quality, large difference, and no consideration of image grayscale, and achieve the effect of improving image quality and accuracy.
Active Publication Date: 2021-08-03
MACCURA MEDICAL INSTR CO LTD
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[0003] The camera focusing method in the prior art is mainly implemented based on the sharpness algorithm of the image, without considering the gray scale of the image, resulting in a large visual difference between the cells in the image and the cells under the microscope, and the image quality is low
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[0035] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention.
[0036] The embodiments of the present invention provide a camera auto-focus method and device, an analysis instrument and a storage medium, mainly for the problems that the focus position may not be found accurately during the focusing process of the analysis instrument, resulting in unclear image shooting and image grayscale distortion. By adopting the technical solutions in the embodiments of the present invention, images with higher quality can be obtained, and the accuracy rate of classification and identification of formed components can be improved.
[0037] figure 1 It is a schematic flowchart of a camera auto-focus method provided by an embodiment of the present invention. Such as figure 1 As shown, the auto...
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The invention discloses a camera automatic focusing method and device, an analysis instrument and a storage medium. The method includes: controlling the camera to move the first step from the first focus point to the target object based on the first step length and taking pictures to obtain the first group of image sequences, and determining the second focus according to the clarity state of the first group of image sequences The starting point: control the camera to move the second number of steps from the second focusing starting point to the target object based on the second step length and take pictures to obtain the second group of image sequences, and determine the third focusing starting point according to the clarity state of the second group of image sequences, The second step length is smaller than the first step length; control the camera to move the third step from the third focusing point to the target object based on the third step length and take pictures to obtain a third group of image sequences, according to the third group of image sequences and the existing The final fixed-focus position of the camera is determined by the similarity state of the known component category images, and the third step length is smaller than the second step length. By adopting the embodiment of the present invention, the image quality can be improved, and the accuracy rate of the classification and recognition of the formed components can be improved.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to a camera auto-focus method and device, an analysis instrument and a storage medium. Background technique [0002] In the field of medical analysis, some analytical instruments take samples into images through cameras, and then use digital image processing technology to analyze the formed components in the images to realize the classification and identification of the formed components in the samples. By adaptively adjusting the focus of the camera, higher-quality sample images can be obtained, thereby improving the accuracy of the classification and identification of formed components. [0003] The camera focusing method in the prior art is mainly implemented based on the sharpness algorithm of the image, without considering the gray scale of the image, resulting in a large visual difference between the cells in the image and the cells under the microscope, and the image...
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IPC IPC(8): H04N5/232
CPCH04N23/67H04N23/951
Inventor 万亚利张雅俊
Owner MACCURA MEDICAL INSTR CO LTD