Background-Free Image Generation for Low Subject Proportion Matting
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Solution Overview
Problem
Existing image processing technologies face challenges in achieving high matting precision when the subject proportion in an image is low, resulting in undesired matting effects.
Innovation Solution
A method and apparatus for generating a background-free image by determining the image proportion of a target subject, clipping a subject region image if the proportion is below a threshold, and synthesizing it with a subject region mask to improve matting precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing image processing technology is used for matting, then the process can be completed, but matting precision deteriorates when subject proportion is low
Solution Approach 1:
The patent divides the image processing into two segments: first determining the subject proportion in the original image, then applying different processing paths based on whether the proportion exceeds a threshold. This segmentation allows the system to adapt processing methods to the specific characteristics of the input image, thereby maintaining high matting precision across varying subject proportions.
Solution Approach 2:
The patent applies different processing qualities to different regions of the image based on subject proportion. When subject proportion is low, the system performs enhanced processing on the subject region to compensate for the low proportion, ensuring that the matting precision is maintained locally despite the global challenge of small subject size.
2Measurement precision
If subject region is separately processed, then matting precision is improved, but processing complexity increases
Solution Approach 1:
The patent introduces dynamic processing complexity that adapts to the input image characteristics. The system automatically adjusts the processing path based on subject proportion: for images with high subject proportion, it uses standard processing; for images with low subject proportion, it activates the enhanced separate processing path. This dynamic adaptation ensures high precision when needed while avoiding unnecessary complexity for simple cases.
Data Source
AI summary
Embodiments of the present disclosure provide a method and apparatus for generating a background-free image, a device, and a medium. The method may include: determining an image proportion of a target subject in an original image; clipping, in response to the image proportion being less than a preset threshold, a subject region image corresponding to the target subject from the original image; determining a corresponding subject region mask based on the subject region image; and synthesizing the subject region mask and the subject region image to generate a background-free image corresponding to the original image.