Fish Position Detection via Paired Optical Brightness Scanning
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Solution Overview
Problem
Existing methods for detecting the front/back position of fish in fish processing machines are costly and computationally intensive, leading to delays in position evaluation due to high throughput rates, which limits overall throughput and requires longer processing times.
Innovation Solution
A method involving paired optical scanning of the ventral and dorsal sides of fish using optical scanning means to determine brightness value profiles, ordering the data, and calculating median values to quickly and accurately determine the prone/supine position, reducing computational complexity and enabling fast detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image recognition systems with complex algorithms are used to detect fish position, then measurement precision is improved, but productivity deteriorates due to high computing time requirements
Solution Approach 1:
The patent extracts only the essential features needed for position detection - specifically brightness values from paired optical scans of the fish surface - and discards all other image data. This extraction of critical information allows accurate position determination without the computational burden of processing complete images or using complex recognition algorithms.
Solution Approach 2:
The patent replaces the mechanical/computational system of complex image recognition algorithms with an optical measurement system that directly measures brightness values. This substitution transforms a computationally intensive problem into a simple optical measurement task that can be processed rapidly, thereby maintaining high positional accuracy while enabling high throughput rates.
2Measurement precision
If complex image evaluation algorithms are used, then measurement precision is improved, but loss of time increases due to extended evaluation duration
Solution Approach 1:
The patent extracts only the essential features needed for position detection - specifically brightness values from paired optical scans of the fish surface - and discards all other image data. This extraction of critical information allows accurate position determination without the computational burden of processing complete images or using complex recognition algorithms.
Solution Approach 2:
The patent replaces the mechanical/computational system of complex image recognition algorithms with an optical measurement system that directly measures brightness values. This substitution transforms a computationally intensive problem into a simple optical measurement task that can be processed rapidly, thereby maintaining high positional accuracy while enabling high throughput rates.
3Productivity
If high conveying speeds are used to increase productivity, then loss of time is reduced, but measurement precision deteriorates due to insufficient evaluation time
Solution Approach 1:
The patent replaces the mechanical/computational system of complex image recognition algorithms with an optical measurement system that directly measures brightness values. This substitution transforms a computationally intensive problem into a simple optical measurement task that can be processed rapidly, thereby maintaining high positional accuracy while enabling high throughput rates.
Solution Approach 2:
The patent changes the measurement parameter from complex image data to simple brightness values. This parameter change enables rapid processing at high conveying speeds while maintaining detection accuracy, as brightness measurement requires minimal computation time compared to full image analysis.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for rapid and reliable detection of the fish's position with minimal computing effort, enabling immediate correction before downstream processing machines, thus enhancing throughput and accuracy.
Implementation Method 1
paired optical scanning of the ventral side and dorsal side of the fish to determine a first brightness value profile of a first side and a second brightness value profile of a second side
Data Source
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AI summary
The present invention relates to a method for detecting the prone/supine position of fish (12) conveyed by means of a conveying device (13), comprising conveying the fish (12) by means of the conveying device (13) in the longitudinal direction (11) of the fish, optically scanning the ventral side (15) and dorsal side (16) of the fish (12) in pairs in order to determine a first brightness value profile of a first side and a second brightness value profile of a second side of one of the fish (12) in each case by means of optical scanning means (14), determining a first ordered data series and a second ordered data series by ordering brightness values of the first brightness value profile and of the second brightness value profile according to a predefined ordering criterion, determining a first median value from the first ordered data series and a second median value from the second ordered data series, determining at least one difference value from the first median value and the second median value, and determining the prone/supine position by comparing the at least one difference value with at least one predetermined reference value. The present invention further relates to a corresponding device.