Model printing annular texture full-blanking method, device and equipment and storage medium

Abstract

The invention mainly provides two model printing annular texture full-blanking methods and devices, the method 1 and the device 1 are mainly used in a 3D model computer preprocessing link, a computer control unit obtains continuous three-layer slice images of a model, compares the continuous three-layer slice images to obtain an Nth layer of to-be-processed area, and adds noisy points to the to-be-processed area, and the Nth layer of to-be-processed area is obtained; therefore, the annular texture on the surface of the 3D model finally manufactured by exposure and printing is completely blanked. The method 2 and the device 2 are mainly used in a post-processing exposure link of reading image data by the 3D printing equipment, a 3D printing equipment controller acquires the gray values of the M-th row of pixels of each layer in continuous three layers of slice images of the model, coordinates of the to-be-processed pixels of the M-th row in the Nth layer of slice mask image data are acquired through comparison, and random assignment of the gray values is carried out on the to-be-processed pixels of the M-th row in the Nth layer of slice mask image data; and splicing random assignment results of each row of pixels to obtain image data subjected to assignment processing on the Nth layer, so that the annular texture on the surface of the 3D model which is finally exposed, printed and manufactured is completely blanked.

Description

technical field [0001] The present application relates to the technical field of 3D printing, and in particular to a method, device, equipment and storage medium for fully hiding ring textures in model printing. Background technique [0002] In the current light-curing 3D printing, since the light-curing printing of the 3D model is made by light-curing and stacking the resin layers after exposure and molding of multi-layer slice images, when printing the cube model, the side of the model is smooth without ring texture; but When printing a model with multiple curved surfaces, there will inevitably be a ring texture similar to contour lines on the side of the model and in the Z-axis direction, especially under low-resolution printing machines or under reflective conditions, the ring texture is very obvious. This is because under the existing technology, the image resolution of the mask slice obtained after the 3D model is sliced ​​at a uniform layer thickness needs to be consi...

AI Technical Summary

Problems solved by technology

[0004] Some existing 3D model preprocessing software has slice image anti-aliasing processing function, and although anti-aliasing processing can improve the surface finish of the model, the ring texture still cannot be eliminated

[0005] With the overall development of light-curing 3D printing technology, especially the gradual application of high-resolution light-curing 3D printing technologies such as 4K, 6K, and 8K development mask screens, ring textures that were originally inconvenient to handle at lower resolutions can now be processed in Under the high-resolution printing technology, the blanking of the annular texture on the surface of the model is realized by losing a certain amount of model surface smoothness, such as the prior patent application CN2021113527732, "Method, device, equipment and storage medium for full blanking of model printing annular texture", And CN2021113531390, "Model Preprocessing Annular Texture Concealment Method, Device, Equipment, and Storage Medium" all eliminate the annular texture on the side of the model by making the edge of the mask image on the XY plane have irregular jagged edges, but this annular The texture blanking method cannot realize the circular texture blanking in the Z-axis direction for the time being; therefore, it is necessary to further propose a better solution that can eliminate the circular texture on the side of the model and in the Z-axis direction

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