Object Recognition Device Multipath Pseudo-Object Determination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing object recognition devices face challenges in accurately determining whether a recognized object is erroneously identified due to the multipath phenomenon, especially when the length of a shielding object's side surface cannot be appropriately detected, leading to incorrect object recognition.
Innovation Solution
The object recognition device includes a detection unit to assess the width of a shielding object, an estimation unit to assume the shielding object is a vehicle and estimate its side surface length, and a pseudo-determination unit to determine if a candidate object is a pseudo-object by checking if the transmitted waves are reflected from the shielding object's side surface and if another object is present at a corresponding distance in the reflection direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device uses reflected waves to recognize objects, then object recognition capability is provided, but pseudo-objects are erroneously recognized due to multipath phenomena
Solution Approach 1:
The patent introduces an intermediary verification process that acts as a mediator between wave reception and object recognition. The determination unit serves as this intermediary, checking whether recognized objects are pseudo-objects by analyzing the relationship between reflection points and detected objects, thereby preventing erroneous recognition before it affects the final output
Solution Approach 2:
The patent implements a feedback mechanism where the determination unit continuously monitors recognized objects and provides corrective feedback by eliminating pseudo-objects. The system uses the spatial relationship information (reflection points and object positions) as feedback to verify recognition accuracy and adjust the final object list accordingly
2Measurement precision
If the device determines pseudo-objects using side surface length detection, then pseudo-object identification accuracy is improved, but detection fails when side surface length cannot be appropriately detected
Solution Approach 1:
The patent performs preliminary actions by collecting and storing spatial relationship information (reflection points and object positions) before the actual pseudo-object determination is needed. This preliminary data collection enables the determination unit to perform accurate pseudo-object identification even when side surface length detection fails, as the spatial relationships are already established
Solution Approach 2:
The patent changes the determination parameters from relying solely on side surface length detection to using spatial relationship parameters (reflection point positions and object positions). By changing from a single parameter (side surface length) to multiple parameters (spatial relationships), the system maintains determination reliability even when one parameter cannot be detected
3Measurement precision
If the device checks for objects in reflection directions, then pseudo-object determination accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent segments the determination process into distinct functional units: a detection unit that identifies objects and their positions, and a determination unit that analyzes spatial relationships. This segmentation allows the complex determination process to be broken down into manageable, independent modules that can be processed systematically without overwhelming complexity
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 configuration enables accurate identification of pseudo-objects caused by multipath phenomena even when the side surface length of the shielding object is not properly detected, improving the device's ability to distinguish between actual and erroneous object recognition.
Implementation Method 1
a recognition unit configured to radiate transmission waves in a plurality of radiation directions and receive reflected waves of the transmission waves to recognize objects
Data Source
AI summary
An object recognition device includes a recognition unit and an object determination unit. The object determination unit includes a detection unit, an estimation unit, and a pseudo-determination unit. The estimation unit assumes that a shielding object is a vehicle and estimates a length of a side surface of the shielding object based on the width of the shielding object. The pseudo-determination unit determines whether a candidate object is a pseudo-object by using the length of the side surface. The pseudo-determination unit determines that the candidate object is the pseudo-object, if it is determined that transmission waves radiated in a direction in which the candidate object is located are reflected from the side surface and if another object is recognized at a location apart from a reflection point in a reflection direction by the same distance as a distance from the reflection point to the candidate object.