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Method and device for generating halftone threshold matrix
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A threshold matrix and threshold technology, applied in the field of image processing, can solve the problems of low design efficiency and cumbersome process, and achieve the effect of improving design efficiency and eliminating cumbersome process.
Active Publication Date: 2017-05-31
ZHUHAI PANTUM ELECTRONICS
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[0010] In view of this, an embodiment of the present invention provides a method and device for generating a halftone threshold matrix, which is used to solve the problems in the prior art that when designing and continuously debugging the halftone threshold matrix, the process is relatively cumbersome and the design efficiency is low.
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Embodiment 1
[0091] An embodiment of the present invention provides a method for generating a halftone threshold matrix, such as figure 1 Shown, the generating method of halftone threshold value matrix can comprise the following steps:
[0092] 101. Acquire a halftone threshold matrix parameter input by a user.
[0093] In a specific embodiment, the halftone threshold matrix parameters include: unit dot angle, unit dot shape, unit dot frequency and bit depth of the image to be processed.
[0094] In a specific embodiment, the value range of the unit dot angle is greater than or equal to 0° and less than or equal to 90°.
[0095] Specifically, the user may input the halftone threshold matrix parameters for generating the halftone threshold matrix through the parameter input interface or directly in the program code. According to the halftone threshold matrix parameter, the smallest unit of the halftone threshold matrix, that is, the unit dot, can be generated, and according to the halfton...
Embodiment 2
[0156] An embodiment of the present invention provides a halftone threshold matrix generation device, such as Figure 19 As shown, the device includes:
[0157] An acquisition unit 191, configured to acquire the halftone threshold matrix parameter input by the user;
[0158] An index table generating unit 192, configured to generate a threshold filling index table according to the halftone threshold matrix parameters;
[0159] The threshold matrix generating unit 193 is configured to fill an index table according to the threshold to generate a halftone threshold matrix including at least one threshold.
[0160] In a specific embodiment, the halftone threshold matrix parameters include: unit dot angle, unit dot shape, unit dot frequency and bit depth of the image to be processed.
[0161] In a specific embodiment, when the index table generating unit 192 is configured to generate a threshold filling index table according to the halftone threshold matrix parameter, it is speci...
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Abstract
The embodiment of the invention provides a method and device for generating a halftone threshold matrix. On one hand, the method comprises the following steps: obtaining halftone threshold matrix parameters input by a user; generating a threshold filling index table according to the halftone threshold matrix parameters; and generating the halftone threshold matrix containing at least one threshold according to the threshold filling index table. According to the method and device provided by the embodiment of the invention, the halftone threshold matrix can be automatically generated according to the halftone threshold matrix parameters input by the user, thereby omitting the troublesome process of manual designing and continuously debugging the halftone threshold matrix, and improving the design efficiency.
Description
[0001] 【Technical field】 [0002] The invention relates to the technical field of image processing, in particular to a generation and device of a halftone threshold matrix. [0003] 【Background technique】 [0004] When performing halftone processing on image data, the pixel value of each pixel in the image data is compared with the specified threshold. After each pixel in the image data is processed by halftone, when the pixel value of the pixel is greater than Or when it is equal to the specified threshold, the pixel value of the pixel is set to "1", and when the pixel value of the pixel is smaller than the specified threshold, the pixel value of the pixel is set to "0". [0005] In the prior art, when performing halftone processing on image data, it is necessary to design a halftone threshold matrix for the image data, and often the number of thresholds in the halftone threshold matrix will be smaller than the number of pixels in the image data, When designing the halftone t...
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