A quantitative determination device and method for focusing accuracy
A judging method and technology of a judging device, applied in the field of image processing, can solve problems such as inconvenient image grasping, inability to judge the accuracy of detection, and manual detection methods that cannot be quantified.
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[0036] figure 1 It is a schematic structural diagram of a quantitative determination device for focusing accuracy of the present invention, the device includes an image acquisition device 1, which is used to capture an image of a subject at a certain distance to obtain a focused image; a focus card 2, used as a subject, placed In the viewfinder area of the image acquisition device; the data processing device 3 is connected with the image acquisition device through a connection line 4, analyzes and processes the focused image and judges whether the image acquisition device is in focus, and the connection line can for the USB cable. figure 2 It is a schematic diagram of the focus card used in this embodiment. The focus card is a card with black and white stripes. During the test, the focus card needs to be placed in the focus area to be captured by the image acquisition device. The focus card has a white background with lots of black and white stripes printed on it. The rat...
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