Electronic Device for Perimeter Stain Formation Time Calculation
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Solution Overview
Problem
There is no device capable of calculating the formation time of a perimeter stain, which is a critical clue in solving bloody crimes, as existing technologies lack the necessary tools for on-spot calculation.
Innovation Solution
An electronic device equipped with a camera, input and output units, and a processor that captures images, extracts perimeter stain images, calculates the major axis length and width, estimates formation time using pre-registered equations, and outputs the results, allowing for on-spot calculation and transmission to external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a device capable of calculating perimeter stain formation time is developed, then measurement precision and productivity are improved, but device complexity increases
Solution Approach 1:
The electronic device integrates multiple functions including camera for image capture, processor for image analysis and calculation, and output units for displaying results. This multi-functional integration allows the single device to perform both image acquisition and formation time calculation, improving measurement precision without requiring separate specialized equipment for each function.
Solution Approach 2:
The patent replaces manual measurement and calculation methods with automated image processing and computational algorithms. The processor automatically extracts perimeter stain images, calculates major axis length and width, and determines formation time using pre-registered equations, substituting mechanical/manual processes with digital and computational methods to enhance precision.
2Loss of time
If on-spot calculation capability is implemented, then loss of time is reduced, but device complexity increases
Solution Approach 1:
The device incorporates pre-registered equations and algorithms that are prepared in advance for calculating formation time. When a perimeter stain is captured, the system immediately applies the pre-prepared computational models to derive the formation time, enabling rapid on-spot calculation without requiring complex real-time computations or external reference data collection.
Solution Approach 2:
The patent combines image capture, image analysis, dimensional measurement, and time calculation functions into a single integrated electronic device. This merging of functions allows on-spot calculation by eliminating the need to transfer data between separate devices or perform manual measurements, thereby reducing time loss despite the increased integration complexity.
3Productivity
If automated image extraction and calculation is performed, then productivity is improved, but device complexity increases
Solution Approach 1:
The electronic device autonomously performs the complete workflow including self-capture of images, automatic extraction of perimeter stain images, calculation of major axis length and width, and determination of formation time. The system serves itself by integrating all necessary functions within the single device, eliminating the need for external manual intervention or multiple coordinated devices, thereby enhancing productivity.
Solution Approach 2:
The patent replaces manual image analysis and measurement processes with automated digital image processing and computational algorithms. The processor automatically identifies perimeter stains, extracts relevant images, measures dimensions, and calculates formation time using pre-registered equations, substituting mechanical/manual operations with automated digital systems to improve calculation speed and productivity.
Data Source
AI summary
According to the present disclosure, a method of calculating a formation time of a perimeter stain is performed by a device for calculating a formation time of a perimeter stain, and includes obtaining a captured image of an analysis target by using a camera, extracting an image of a perimeter stain included in the analysis target, by analyzing the obtained captured image, calculating a major axis length and a width of the perimeter stain, estimating a formation time of the perimeter stain by using the major axis length and the width of the perimeter stain, and outputting the image of the perimeter stain and the formation time of the perimeter stain.