Partial Image Hashing for Faster Authenticity Verification
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Solution Overview
Problem
The increased data processing load in imaging apparatuses due to generating electronic signatures for entire captured images, particularly in continuous shooting or moving image modes, leads to potential delays in signature generation.
Innovation Solution
Generating a hash for a part of the captured image, such as the focused part or important regions, and linking it with part identification information to create an electronic signature, reducing the data load and processing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic signatures are generated for entire captured images, then authenticity verification is ensured, but processing load increases and signature generation time is delayed
Solution Approach 1:
The captured image is divided into multiple regions, and hash values are generated only for specific important regions rather than the entire image. This segmentation approach maintains authenticity verification for critical areas while reducing overall processing load and accelerating signature generation.
Solution Approach 2:
The patent extracts and processes only the essential parts of the image that require authenticity verification. By taking out only the necessary regions for hashing and signing, the system achieves reliable verification without the computational burden of processing complete images.
2Reliability
If hash values are generated for entire captured images, then complete image authenticity is verified, but data processing load increases
Solution Approach 1:
The image data is segmented into multiple regions, and hashing is performed only on selected important regions. This reduces the quantity of data that needs to be processed while maintaining verification reliability for critical image portions.
Solution Approach 2:
Instead of applying hashing to the entire image (excessive action), the patent applies hashing only to necessary regions (partial action). This partial processing approach reduces data load while providing sufficient authenticity verification for the intended use case.
Data Source
AI summary
There is provided an imaging apparatus, an information processing apparatus, an information processing method, and a program that are intended to suppress an increase in a load. A captured image is linked with a hash value for a part of the captured image and part identification information for identifying the part. Further, the part of the captured image is extracted from the captured image in reference to the part identification information for identifying the part, the part identification information being linked with the captured image along with the hash value for the part and the part identification information, a hash value for the part extracted and the part identification information is generated, and the hash value generated is compared with the hash value linked with the captured image. The present disclosure can be applied to, for example, an image processing apparatus, an information processing apparatus, an imaging apparatus, electronic equipment, an information processing method, a program, or the like.