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Straight line detection method and device

A straight line detection and straight line technology, applied in the field of image processing, can solve problems such as weak edge strength, straight line break detection results, inaccuracy, etc.

Active Publication Date: 2014-07-09
XIAOMI INC
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Problems solved by technology

[0005] In order to solve the problem that the line detection method involved in the related art will cause line breakage and inaccurate detection results when the edge strength is weak or there is noise interference, the embodiments of the present disclosure provide a line detection method and device

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  • Straight line detection method and device

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Embodiment Construction

[0098] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, not all of them. . Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.

[0099] First of all, it should be noted that the electronic devices involved in this disclosure can be mobile phones, tablet computers, e-book readers, MP3 players (Moving Picture Experts Group Audio Layer III, moving picture experts compression standard audio layer 3), MP4 (Moving Picture Experts Group Audio Layer IV, dynamic image experts compress standard audio layer 3) players, laptops and desktops, etc. Meanwhile, the electronic device ...

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Abstract

The invention discloses a straight line detection method and device and belongs to the field of image processing. The straight line detection method comprises the steps that gradient histogram feature sets of all pixel points in an image are obtained, wherein the gradient histogram feature sets are used for reflecting straight line features of the part where the pixel points exist; according to the gradient histogram feature sets of all the pixel points, at least one alternative direction of a straight line to be detected is determined; according to the alternative direction, the accurate direction and position of the straight line to be detected are determined. The problems that according to a straight line detection method in the prior art, when edge strength is weak or noise interference exists, a straight line is broken, and a detection result is inaccurate are solved. According to the straight line detection method, Hough transfom is not adopted, and image binaryzation is not needed, so that the influence of errors produced by binaryzation is sufficiently avoided, and straight line detection accuracy is improved.

Description

technical field [0001] The present disclosure relates to the field of image processing, in particular to a straight line detection method and device. Background technique [0002] The detection of straight lines and geometric shapes is an important topic in the field of image processing. In real scenes, because there are a large number of straight lines and geometric shapes, it is of great significance for image processing to achieve fast and accurate detection methods for straight lines and geometric shapes. [0003] The detection method of geometric shape is usually produced based on the line detection method. In the related art, the method of Hough transform is generally used for line detection. The Hough transform defines a parameter space that has a dual relationship with the image. A straight line in the image corresponds to a point in the parameter space, and a point in the image corresponds to a sinusoid in the parameter space. From the above correspondence, it ca...

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Application Information

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IPC IPC(8): G06T7/00G06V10/48G06V10/50
CPCG06V10/443G06V10/48G06V10/50G06T5/00G06T7/60G06T11/20G06V10/44
Inventor 王百超王琳陈志军
Owner XIAOMI INC
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