Sketch image drawing method and device, computer equipment and readable storage medium

Abstract

The invention discloses a sketch image drawing method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring a face image and a corresponding real sketch image; inputting the face image into an encoder of a feature pyramid network for step-by-step encoding to obtain convolution features of different scales; inputting the finally output convolution features into a decoder of the feature pyramid network for step-by-step decoding, and fusing the middle convolution features in the decoding process to obtain a plurality of prediction sketch images; fusing all the predicted sketch images to obtain a final predicted image; calculating image loss of the final prediction image and the real sketch image according to a preset loss function, and optimizing network parameters of the feature pyramid network according to the image loss to obtain an optimal feature pyramid network; and inputting the target face image into the optimal feature pyramid network for sketch image generation to obtain a target sketch image. According to the method, the generated sketch image has richer details and is more natural and clearer.

Description

technical field [0001] Embodiments of the present invention relate to the field of image processing, and in particular, to a method, device, computer equipment, and storage medium for drawing a sketch image. Background technique [0002] In recent years, face-related generation effect algorithms have received extensive attention, and the market for many face effect software has greatly expanded. However, compared with effects such as cartoonization and 3Dization, the existing methods cannot produce high-quality sketch portraits, and the generated face sketches are always difficult to achieve the effect of manual sketching. The sketched face has a highly abstract style, including a large number of irregular line distributions, especially the areas with rich detailed information such as hair, eyes, mouth, etc. At the same time, the integrity of the face also has a strong ability to reconstruct the structure of the algorithm. Require. Mainstream methods are usually done using...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a sketch image drawing method, device, computer equipment and readable storage medium, aiming to solve the problem of poor sketch effect of the sketch image generated in the prior art

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