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Abnormal lamp bead positioning method and device and storage medium

A positioning method and lamp bead technology, applied in image analysis, instrumentation, calculation, etc., can solve problems such as large amount of calculation

Active Publication Date: 2021-05-11
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] It can be seen that in the existing abnormal lamp bead positioning process, the search step needs to be given, which is less affected by the actual lamp bead image size, and because it is necessary to locate all the lamp bead positions before finding the abnormal lamp bead, Large amount of calculation

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  • Abnormal lamp bead positioning method and device and storage medium
  • Abnormal lamp bead positioning method and device and storage medium
  • Abnormal lamp bead positioning method and device and storage medium

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Embodiment Construction

[0041] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] In the embodiment of the present invention, instead of using the row-by-row or column-by-column method to locate the center point of the lamp bead based on the search step length, it is based on the row grayscale feature and column grayscale feature of the display screen image, which will affect the difference between normal lamps and lamps. The lamp bead gap between the bead and the abnormal lamp bead is removed from the display image, and according to the grayscale difference between the normal lamp bead and the abnormal lamp bead, the connected area where the abnormal lamp bead position in the image is highlighted through binarization processing, Since only abnormal lamp beads need to be positioned, the amount of calcula...

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Abstract

The invention provides an abnormal lamp bead positioning method and device and a storage medium. The abnormal lamp bead positioning method comprises the steps of respectively acquiring images, corresponding to an R channel, a G channel and a B channel, of a display screen image after a display screen is electrified; for the image corresponding to each channel in the RGB three channels, executing the following operations: extracting the gray features of each row of pixels and the gray features of each column of pixels in the image; determining a row gap between two adjacent rows of lamp beads in the image according to the gray features of each row of pixels in the image, and determining a column gap between two adjacent columns of lamp beads in the image according to the gray features of each column of pixels in the image; removing a row gap between two adjacent rows of lamp beads and a column gap between two adjacent columns of lamp beads in the image; and binarizing the image without the row gap and the column gap, analyzing a connected region in the image after binarization processing, and determining the position of an abnormal lamp bead in the display screen image according to the analyzed connected region.

Description

technical field [0001] The present invention relates to the technical fields of display control and image processing, in particular to a method, device and storage medium for locating abnormal lamp beads. Background technique [0002] The current lamp bead positioning method is to binarize the image data, extract the center of the lamp bead according to the connected domain of the image data after binarization, and then perform a row-by-row or column-by-column method according to a certain search step. Bead center point for positioning. [0003] The accuracy of the above lamp bead positioning method depends to a certain extent on the given search step size, and the search step size is determined according to the lamp spacing of the lamp bead image, so it is greatly affected by the size of the actual lamp bead image, and After locating all the lamp beads, it is necessary to further judge whether each lamp bead is abnormal, so as to find out all abnormal lamp beads. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/187G06T7/90
CPCG06T7/0004G06T7/187G06T7/90
Inventor 章琦杰
Owner HANGZHOU HIKVISION DIGITAL TECH
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