RAW Image Authenticity Tracking via Segmented Metadata Fields
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Solution Overview
Problem
Existing image processing technologies cannot distinguish whether image editing has been performed on developed image data, even if the original RAW image data has not been falsified.
Innovation Solution
An image processing apparatus that includes a processor and memory to obtain RAW image data, perform development processing, determine if the RAW image data has been falsified or if image editing has been performed, and generate an image file with authenticity guarantee information indicating whether image editing was performed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authenticity guarantee information is added to developed image data to ensure the original RAW image data has not been falsified, then the authenticity of the original image is guaranteed, but it becomes impossible to distinguish whether image editing has been performed on the developed image data
Solution Approach 1:
The patent divides the authentication information into two separate segments: (1) authenticity guarantee information that verifies the original RAW image data has not been falsified, and (2) image editing information that indicates whether image editing has been performed on the developed image data. This segmentation allows both functions to coexist without interfering with each other, resolving the contradiction between guaranteeing authenticity and preserving editing status information.
Solution Approach 2:
The patent adds another dimension to the authentication information structure by introducing a new field (image editing information) that operates independently from the existing authenticity guarantee information. This dimensional expansion allows the system to simultaneously provide both authenticity verification and editing status indication without compromising either function.
2Adaptability or versatility
If development parameters are changed to perform image editing such as creating image data with different image quality or display range, then image editing capabilities are enabled, but the ability to distinguish edited from unedited image data is lost
Solution Approach 1:
The patent applies preliminary action by recording the image editing status information at the time of development processing before any subsequent use or distribution. This preliminary recording ensures that the editing status is captured and preserved in the metadata, allowing later distinction between edited and unedited image data even when development parameters have been changed.
3Ease of manufacture
If development processing is performed using development parameters changed since photographing time, then image editing is achieved, but authenticity guarantee information cannot indicate whether editing was performed
Solution Approach 1:
The patent introduces an intermediary element (image editing information field in the metadata) that acts as a mediator between the development processing flexibility and the authenticity guarantee information. This intermediary records whether image editing was performed, allowing the system to maintain both processing flexibility and information completeness without direct conflict between the two functions.
Data Source
AI summary
An image processing apparatus capable of providing developed image data that can distinguish whether or not image editing has been performed in a development processing of RAW image data is provided. A digital camera performs a development processing on data included in a RAW image file designated by a user. The digital camera, in the case of being determined that image editing has not been performed in the development processing of the RAW image data determined to have not been falsified, adds information indicating that the image editing has not been performed to an image file including the developed image data, and in the case of being determined that the image editing has been performed in the development processing of the RAW image data determined to have not been falsified, adds information indicating that the image editing has been performed to the image file including the developed image data.