Image Processing Apparatus Accurate Subject Dimension Calculation
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Solution Overview
Problem
Existing image processing techniques struggle to accurately calculate the full scale of a subject in an image, especially when considering the focus state, and are limited to displaying a single subject's dimension in actual size.
Innovation Solution
An image processing apparatus and method that acquire an image and associated capturing information, including in-focus information, to calculate the object side pixel dimension of a target subject, allowing for more accurate reproduction of the subject's dimension at a desired position in the image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If information stored in an Exif file is used to calculate the actual size, then the calculation process is simple, but the accuracy of the full scale calculation is insufficient because processing considering the focus state is not performed
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing the relationship between focus states and magnification factors in a lookup table during system initialization or calibration. When processing an image, the system simply retrieves the appropriate magnification factor based on the focus state information from Exif data, avoiding complex real-time calculations while maintaining high accuracy. This resolves the contradiction by preparing computational results in advance.
Solution Approach 2:
The patent introduces an intermediary magnification factor that mediates between the simple Exif data and the accurate full scale calculation. This magnification factor, derived from focus state information, acts as a bridge that translates basic Exif data into precise dimensional measurements without requiring complex calculation processes. The intermediary element simplifies the overall calculation while improving accuracy.
2Adaptability or versatility
If only the use in a configuration of displaying a dimension of a single subject in an image in an actual size is discussed, then the application scope is limited, but the processing complexity is reduced
Solution Approach 1:
The patent applies universality by designing an image processing system that can handle multiple subjects and various output configurations using the same core calculation methodology. The system calculates object side pixel dimensions for any number of subjects in an image and can output results in different formats (single subject, multiple subjects, comparative displays). This single versatile configuration replaces the need for multiple specialized processing paths, increasing adaptability without proportionally increasing complexity.
Data Source
AI summary
An image processing apparatus includes an acquisition unit configured to acquire an image captured by an imaging unit, and image capturing information at the time of image capturing of the image, and a calculation unit configured to calculate an object side pixel dimension of a target subject in the image based on the image capturing information and a pixel dimension of the imaging unit, wherein the acquisition unit acquires in-focus information indicating an in-focus state of a subject in an image, as the image capturing information, and wherein the calculation unit calculates the object side pixel dimension based on the in-focus information.