Image Quality Evaluation for Digital Camera Display
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Solution Overview
Problem
Users face difficulties in selecting desired images from large amounts of data stored in digital cameras due to the small size of the liquid crystal monitor, leading to inefficiencies in image selection and potential wasteful printing of images with unsuitable quality.
Innovation Solution
An image forming apparatus equipped with a searching unit, informing unit, and selecting unit that allows users to input search keys, analyze image data, and determine image quality, enabling efficient selection and processing of desired images based on identifying information and quality assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image data is displayed on a small liquid crystal monitor for user confirmation, then the device structure remains simple, but the user cannot accurately determine image quality suitable for printing
Solution Approach 1:
The patent introduces an image quality evaluation unit that acts as an intermediary between the image data and the user. This unit automatically analyzes image quality metrics (sharpness, exposure, composition) and provides objective evaluation results, compensating for the inability of the small display to show fine image details. The evaluation unit mediates the gap between limited display capabilities and the need for accurate quality assessment.
2Productivity
If users sequentially display images on the liquid crystal monitor to select desired images, then the selection process can be simple, but the time and labor required increases significantly with large amounts of image data
Solution Approach 1:
The patent applies preliminary action by having the image quality evaluation unit automatically evaluate and rank images before the user needs to select them. The system pre-processes the image data, calculating quality metrics and organizing images by evaluation results, so that when the user views images on the display, they are already sorted in a useful order. This preliminary evaluation significantly reduces the time and effort needed to find suitable images for printing.
3Loss of substance
If images with unsuitable quality are printed without prior quality assessment, then the printing process can be simple, but wasteful consumption of printing sheets occurs
Solution Approach 1:
The patent implements self-service by enabling the image forming device to automatically evaluate its own image quality without requiring external equipment or complex user judgment. The image quality evaluation unit uses built-in algorithms to assess sharpness, exposure, and other quality parameters, allowing the device to self-determine which images are suitable for printing. This self-evaluation capability prevents wasteful printing of poor-quality images while keeping the overall system relatively simple.
Data Source
AI summary
An image search method for searching image data includes the steps of searching identifying information for identifying the image data by using search information, informing the image data including the identifying information in correspondence with the search information, and causing a user to select image data to be executed a predetermined processing from the informed image data.