Photorealistic Thumbnail Generation via Local Feature Segmentation
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Solution Overview
Problem
The process of creating thumbnail images often results in the loss of local features from original images, making it difficult for users to accurately assess the quality and content of the original images, leading to inefficient browsing.
Innovation Solution
A method that analyzes the visual features of local input image regions to produce reduced-resolution visual representations, which are then used to create photorealistic thumbnail images that reflect the arrangement, proportions, and local details of the original images, ensuring that the thumbnail images accurately represent the quality of the original images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If standard thumbnail generation is used to reduce image size, then processing speed and storage efficiency are improved, but local features and image quality representation are lost
Solution Approach 1:
The patent divides the original image into multiple local regions and processes each region separately to identify and preserve salient features. This segmentation approach allows the system to maintain important local characteristics while generating a reduced-resolution thumbnail, resolving the contradiction between compression efficiency and feature preservation.
Solution Approach 2:
The patent applies different processing qualities to different regions of the image based on their importance. Salient regions are preserved with higher quality and detail, while non-salient regions are compressed more aggressively. This local quality differentiation maintains critical image information while improving overall processing efficiency.
2Measurement precision
If non-photorealistic thumbnails are synthesized to enhance feature visibility, then feature identification is improved, but natural appearance and photorealism are lost
Solution Approach 1:
The patent enhances specific local regions with improved quality and detail while maintaining the overall photorealistic appearance of the thumbnail. By selectively enhancing salient features rather than applying uniform non-photorealistic processing, the system achieves both feature visibility and natural appearance.
Solution Approach 2:
The patent creates a photorealistic copy of the original image at reduced resolution that faithfully reproduces the appearance and characteristics of the source image. This copying approach preserves the natural look while incorporating enhanced feature representation through selective region processing.
3Manufacturing precision
If high-resolution original images are used to maintain quality, then image detail is preserved, but storage space and processing time increase
Solution Approach 1:
The patent extracts only the essential and salient features from the high-resolution original image to create a reduced-resolution thumbnail. By taking out and preserving only the most important visual information, the system achieves space-efficient storage while maintaining quality representation of key image characteristics.
Solution Approach 2:
The patent changes the resolution parameter from high to low for the thumbnail while using advanced processing to maintain quality perception. By altering the resolution parameter and compensating through selective feature preservation, the system reduces storage requirements while maintaining effective image quality representation.
Data Source
AI summary
Methods, systems, and machine-readable media for processing an input image are described. In one aspect, respective visual features of local input image regions of an input image having a first pixel resolution are analyzed to produce a result. Based on the result of analyzing the visual features, reduced-resolution visual representations of corresponding ones of the local input image regions are derived from the input image. A thumbnail image that reflects the arrangements, proportions and local details of the input image having a second pixel resolution lower than the first pixel resolution is produced from the reduced-resolution visual representations. The thumbnail image is output.