High-fidelity hidden image figure screen frequency determination method and system based on direct correction
A technology of digital network and image collection, which is applied in image data processing, image enhancement, image analysis, etc., can solve the problems of dot structure disturbance, application range limitation, and different results in the printing system, and achieve a wide range of grayscale changes and improved High-quality, high-contrast effects
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[0074] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0075] A high-fidelity Tibetan map digital hanging method based on direct correction, such as figure 1 Shown is the flow chart of the method. In this embodiment, a base map is hidden under a full-color table map. After hiding the map, the table map has no defects visible to the naked eye. The color scale range of the table map can be 0~ 100%, the color scale range of the base map can also be 0-100%, within the range of 10-90% color scale of the table map, the base map is clear and detectable, the specific method is as follows.
[0076] S101. Input a full-color table map, a gray-scale base map and setting parameters, wherein the base map parameters include the number of la...
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