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Image color uniformizing method and device
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An image and block technology, applied in the field of image processing, can solve the problems of cumbersome processing steps, high computer performance requirements, and large amount of calculation.
Inactive Publication Date: 2020-12-01
BEIJING AEROSPACE HONGTU INFORMATION TECH
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However, in practice, it has been found that the existing image color uniformity method needs to calculate the background image every time it is processed, and the processing steps are cumbersome. At the same time, the color uniformity process requires a lot of calculations, requires high computer performance, and has low color uniformity efficiency.
It can be seen that the existing image color uniformity method has a large amount of calculation and low processing efficiency
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Embodiment 1
[0066] Please see figure 1 , figure 1 A schematicflowchart of a method for image color uniformity is provided for the embodiment of the present application. Wherein, the image uniform color method includes:
[0067] S101. Acquire an image to be uniformed.
[0068] In the embodiment of the present application, the method is mainly applied in the color uniform processing scene of geographic images.
[0069] In the embodiment of the present application, the image to be uniformed is a geographic image, specifically, a remote sensing image.
[0070] In the embodiment of this application, remote sensing image (abbreviation: RS, English: Remote Sensing Image) refers to a film or photo that records the size of electromagnetic waves of various ground features, and is mainly divided into aerial photos and satellite photos.
[0071] In the embodiment of this application, the imaging methods of remote sensing images include aerial photography imaging, aerial scanning imaging and micr...
Embodiment 2
[0096] Please see figure 2 , figure 2 It is a schematicflowchart of an image color uniformity method provided in the embodiment of the present application. Such as figure 2 As shown, wherein, the image color uniform method includes:
[0097] S201. Acquire a geographic template image.
[0098] In the embodiment of the present application, the geographic template image is a whole geographic image template, that is, a standard image for performing color uniformity processing on the image to be color uniform.
[0099] S202. Perform block processing on the geographic template image to obtain multiple image blocks.
[0100] As an optional implementation manner, performing block processing on the geographic template image to obtain multiple image blocks may include the following steps:
[0101] Obtain preset block information;
[0102] According to the preset block information, calculate the block number and block size information for block geographic template imagery;
[...
Embodiment 3
[0152] Please see image 3 , image 3 It is a schematic structural diagram of an image color uniformity device provided in an embodiment of the present application. Such as image 3 As shown, the image color uniform device includes:
[0153] An acquisition module 310, configured to acquire an image to be uniformly colored.
[0154] The parameter determination module 320 is configured to determine a target color uniformity parameter matching the image to be uniform color from the prestored template color uniformity parameters.
[0155] The first calculation module 330 is configured to calculate the grayscale value of the image to be uniformed after being uniformed according to the target color uniformity parameter and the image to be uniformed.
[0156] The color uniform module 340 is configured to perform color uniform processing on the image to be uniform according to the gray value after color uniformity to obtain a uniform color image.
[0157] In the embodiment of the...
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Abstract
The embodiment of the invention provides an image color uniformizing method and device and relates to the technical field of image processing. The image color uniformizing method comprises the following steps of: obtaining an image to be subjected to color uniformizing; determining a target color uniformizing parameter matched with the image to be subjected to color uniformizing from pre-stored template color uniformizing parameters; calculating a gray value of the image to be subjected to color uniformizing after color uniformizing according to the target color uniformizing parameter and theimage to be subjected to color uniformizing, and finally carrying out color uniformizing processing on the image to be subjected to color uniformizing according to the gray value after color uniformizing to obtain a color uniformizing image. Visibly, when the image to be subjected to color uniformizing is subjected to color uniformizing processing, only the pre-stored template color uniformizing parameters need to be called, additional calculation is not needed any more, the stability and the applicability are good, and particularly, the color uniformizing effect and the efficiency are well improved under the conditions of large data volume and messy image acquisition time.
Description
technical field [0001] The present application relates to the technical field of image processing, and in particular, to an image color uniformity method and device. Background technique [0002] In the application of remote sensing images, there are obvious differences in color and brightness between images due to different imaging conditions such as acquisition time, illumination, camera angle, and object types. Accurately and truthfully represent objective reality. The existing color uniformity method is usually a color uniformity method based on the Mask principle. First, the Gaussian low-pass filter is used to simulate the brightness distribution of the image as the background image, and then the image to be uniformed is subtracted from the background image, and then the Contrast stretching enhances the contrast of image details and achieves the purpose of color uniformity. However, in practice, it is found that the existing image color uniformity method needs to calc...
Claims
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Application Information
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