Image Processing Device for Natural Makeup Simulation Under Varied Lighting
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Solution Overview
Problem
Conventional makeup simulation technologies require an ideal, evenly lit, and oriented face image for effective makeup simulation, limiting their application to controlled environments and failing to correct for uneven lighting and occlusions, leading to unnatural results.
Innovation Solution
An image-processing device and method that corrects skin tone differences across regions of a face image by determining representative colors and adjusting makeup colors accordingly, allowing for natural-looking makeup simulation even under varied lighting conditions and with occlusions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional makeup simulation technologies are used, then makeup simulation can be performed on ideal face images, but the system cannot handle uneven lighting and occlusions, leading to unnatural results
Solution Approach 1:
The patent applies local quality by determining representative colors for different regions of the face image and adjusting makeup colors locally based on each region's characteristics. The system divides the face into multiple regions, analyzes lighting conditions and skin tones in each region, and applies region-specific color corrections to achieve natural-looking makeup simulation under varied lighting conditions.
Solution Approach 2:
The patent employs parameter changes by adjusting color parameters (hue, saturation, brightness) of the makeup pattern based on the representative colors of different face regions. The system dynamically modifies makeup color parameters to compensate for uneven lighting and skin tone variations, ensuring consistent and natural appearance across the entire face.
2Manufacturing precision
If an ideal, evenly lit face image is required for makeup simulation, then accurate makeup application is achieved, but the system becomes difficult to use in ordinary conditions without professional assistance
Solution Approach 1:
The patent implements self-service by enabling the makeup simulation system to automatically analyze and correct lighting variations and skin tone differences in user-uploaded images without requiring professional intervention. The system autonomously determines representative colors for different face regions, adjusts makeup parameters accordingly, and produces natural-looking results, making the technology accessible to ordinary users in everyday conditions.
3Device complexity
If the same makeup color is applied to all regions, then the process is simple, but color differences between regions due to lighting are not corrected, resulting in unnatural appearance
Solution Approach 1:
The patent applies local quality by determining representative colors for different regions of the face image and adjusting makeup colors locally based on each region's characteristics. The system divides the face into multiple regions, analyzes lighting conditions and skin tones in each region, and applies region-specific color corrections to achieve natural-looking makeup simulation under varied lighting conditions.
Data Source
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AI summary
The purpose of the present invention is to provide an image-processing device and image-processing method capable of performing a suitable makeup treatment on face images taken under a variety of conditions. This image-processing device (6), which performs a process in which makeup of a specified color is composited onto skin in a face image, is provided with a color-correction unit (16) and a coloring unit (17). Given left and right makeup regions in which makeup will be composited onto the face image, the color-correction unit uses the difference between the representative color for the left makeup region and the representative color for the right makeup region of the face image to correct the makeup color and determine a left makeup color and right makeup color so as to decrease the post-compositing difference in color between the left and right makeup regions. The coloring unit generates makeup by overlaying the left makeup color and right makeup color onto the skin colors in the left and right makeup regions of the face image, respectively.