Image corrosion method, image processing method and device

Abstract

The invention discloses an image corrosion method and an image processing method and device, and the method comprises the steps: dividing an input image into a target pixel and a non-target pixel, determining the pixel distance between the target pixel and the nearest non-target pixel, changing the target pixel with the pixel distance not larger than a set corrosion distance into the non-target pixel, and carrying out the recognition of the non-target pixel. And shrinking the region where the target pixel in the input image is located by a set corrosion distance unit. Compared with an existing corrosion method based on structural elements, the corrosion method for shrinking the target pixel based on the pixel pitch, provided by the embodiment of the invention, has the advantages that the problem that the target pixel with a smooth edge cannot be well processed due to the fact that multiple combination tests need to be performed on the structural elements with different sizes and different shapes in the existing corrosion method based on the structural elements is solved; the method does not need to calculate or define the size and shape of a structural element in advance, is low in development threshold, does not need to carry out multiple times of multi-parameter combination tests of the structural element, saves development resources, can better process target pixels with smooth edges, retains the characteristics of an original picture, and is high in anti-aliasing performance.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image erosion method, image processing method and device. Background technique [0002] At present, the existing image erosion methods are based on structural elements to operate on the target pixels in the picture, and generally use a predefined image with the same size (usually 3*3 pixels or 5*5 pixels) Structural elements of a specific shape (generally cross, circle, and rectangle) operate on the entire image, and the calculation method of sliding structural elements to take the minimum value is used for corrosion processing. [0003] The corrosion method based on structural elements has the problems of high development threshold, high testing cost, and inability to handle target pixels with smooth edges. Contents of the invention [0004] The embodiment of the present invention provides an image erosion method, image processing method and device, which are used...

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Problems solved by technology

[0004] The embodiment of the present invention provides an image erosion method, image processing method and device, which are used to solve the problems in the prior art that the development threshold of the corrosion method based on structural elements is high, the test cost is high, and the target pixels with smooth edges cannot be processed well. question

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