A method for visually positioning a screen of a mobile device

A mobile device and visual positioning technology, applied in the field of visual positioning, can solve the problems of unguaranteed accuracy and cumbersome methods, and achieve the effect of high precision, high efficiency, and elimination of artificial interference

Pending Publication Date: 2019-01-11
成都智慧海派科技有限公司
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Problems solved by technology

[0003] The most critical step in the above process is to locate the image coordinates of the four vertices of the mobile phone screen. The traditional method is to use the camera to take pictures of the mobile phone, and then use the mouse to manually mark the image positions of the four vertices of the mobile phone screen. This method is cumbersome and the accuracy cannot be achieved. ensure

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  • A method for visually positioning a screen of a mobile device

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the description of the drawings and specific embodiments.

[0032] Such as figure 1 As shown, a method for visually locating the screen of a mobile device comprises the following steps: running a customized program on the mobile phone to display a color (such as pure white) on the full screen of the mobile phone, which is opposite to the color of the part outside the mobile phone screen; The image at the location of the mobile phone; performing bilateral filtering on the image can effectively remove noise while ensuring clear boundaries; performing Harris corner detection on the filtered image; performing expansion processing on the image after corner detection; expansion Threshold the image after processing; perform connected domain processing on the thresholded image to obtain the center of gravity of Harris corner points; set an iteration stop condition, and correct these corner points with sub...

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Abstract

The invention provides a method for visually positioning a screen of a mobile device, comprising the following steps: S1, displaying a pure color on a screen of the mobile device in full screen, wherein the pure color is different from the color of a part outside the screen of the mobile device; S2, acquiring an image at the mobile device; S3, carrying out bilateral filtering on that image; S4, performing Harris corner detection on the bilateral filtered image; S5, dilating the image after Harris corner detection; S6, thresholding the expanded image; S7, performing connected region processingon the thresholded image to obtain the center of gravity of the Harris corner point. The invention has the beneficial effects that the four vertex coordinates of the screen of the mobile device are obtained by using the visual positioning, artificial interference is eliminated, precision is ensured, the precision of the subsequent manipulator clicking is ensured, the purpose of accurate testing isachieved, the precision is high, the efficiency is high, and the automation production is facilitated.

Description

technical field [0001] The invention relates to visual positioning, in particular to a method for visual positioning of a screen of a mobile device. Background technique [0002] When the manipulator is automated to test the mobile phone, it is necessary to complete the conversion between the image coordinates and the machine coordinates. The conversion process is: firstly use the VxCalib function to calibrate the industrial camera and the manipulator, obtain the calibration parameters of the camera, and then obtain the image coordinates of the four vertices of the mobile phone screen , use the VxTrans function to convert the image coordinates into manipulator coordinates through the established calibration, and realize the automatic operation of the mobile phone screen by converting the partial image of the image in the mobile phone and the coordinates of the mobile phone screen. [0003] The most critical step in the above process is to locate the image coordinates of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/90G06T7/70G06T7/66G06T7/136G06T7/187
CPCG06T2207/10004G06T2207/20164G06T7/136G06T7/187G06T7/66G06T7/70G06T7/90
Inventor 邓有为张世龙
Owner 成都智慧海派科技有限公司
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