Image Deformation Maintaining Face Ratio via Segmentation
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Solution Overview
Problem
Existing image processing techniques that deform images containing people often alter the vertical-to-horizontal ratio of the face, making the processed image appear unnatural or strange, especially when attempting to create a slim and slender figure.
Innovation Solution
An image processing apparatus and method that sets a compression area around the face in a target image, compressing it in a specific direction while expanding the face in a corresponding manner to maintain the original face ratio, allowing for controlled deformation without altering the face's natural appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If uniform deformation processing is applied to the entire image area containing a person, then the body shape can be made slim and slender, but the vertical-to-horizontal ratio of the face changes substantially making the image appear strange or unnatural
Solution Approach 1:
The image is divided into a face area and a body area. The face area is identified by detecting facial features, and different deformation processing is applied to each area. The body area undergoes compression to achieve a slim appearance, while the face area undergoes expansion to maintain its natural vertical-to-horizontal ratio, thus resolving the contradiction between body shaping and face preservation.
Solution Approach 2:
Different deformation characteristics are applied to different regions of the image. The face area is expanded in the vertical direction to preserve its natural proportions, while the body area is compressed horizontally to achieve the desired slim effect. This local differentiation allows simultaneous achievement of body shaping and face preservation.
2Manufacturing precision
If the face area is expanded to maintain the vertical-to-horizontal ratio, then the face appearance remains natural, but the overall body slimming effect is reduced
Solution Approach 1:
The image processing systematically segments the face area from the body area using face detection algorithms. This segmentation enables independent control of deformation parameters for each region, allowing the face to be expanded for natural appearance while the body is compressed for slimming effect, resolving the trade-off between these two requirements.
Solution Approach 2:
The face area is expanded by an amount that may seem excessive for individual face correction, but when combined with the compression applied to the larger body area, the overall effect achieves both natural face appearance and body slimming. The partial expansion of the face is compensated by the more significant compression of the body region.
Data Source
AI summary
An image processing apparatus includes an area setting unit, an image deformation unit, and a face deformation unit. The area setting unit sets, in a target image that includes a face image, an area including the face image as a compression area. The image deformation unit compresses the compression area in a specific direction at a predetermined compression rate. The face deformation unit deforms the face image by expansion amount determined on the basis of the compression rate in such a manner that at least a part of the face image is expanded in the specific direction.