Point Cloud Compression Control Based on Position and Posture
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Solution Overview
Problem
The large amount of point cloud data generated by measurement equipment, such as lidar, leads to excessive data communication and processing loads on server devices, and storage issues in devices like drones, limiting their operational time.
Innovation Solution
An information processing device that acquires measured data and determines a compression mode based on position and/or posture, using a compression unit to reduce the data amount, which includes a transmission unit to send compressed data to a data collection device, and a self-position estimation unit to accurately determine storage and data collection needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If point cloud data is collected at a constant data rate, then measurement completeness is improved, but storage capacity is exhausted quickly and communication load increases
Solution Approach 1:
The patent applies dynamics by making the data collection rate variable rather than constant. The determination unit dynamically adjusts the data collection rate based on the current storage capacity and communication status, allowing the system to adapt its measurement completeness to available resources while preventing storage exhaustion and communication overload
Solution Approach 2:
The patent changes the parameter of data collection rate from a fixed constant to a variable parameter. By modifying this parameter based on storage capacity and communication conditions, the system optimizes the balance between measurement completeness and resource constraints, reducing data amount when resources are limited while maintaining high measurement quality when resources are abundant
2Loss of information
If all measured data is transmitted to the server, then data completeness is improved, but communication load and processing load on the server become excessive
Solution Approach 1:
The patent extracts and processes data locally before transmission. The determination unit selectively determines which data to transmit based on local analysis of storage capacity and communication status, extracting only the necessary data for transmission while discarding redundant information, thereby reducing communication load and server processing requirements while maintaining data completeness for critical information
Solution Approach 2:
The information processing device acts as an intermediary between the measurement equipment and the server. It performs intermediate processing by determining optimal data transmission based on local conditions, reducing the burden on both the communication channel and the server while preserving essential data completeness
3Duration of action of moving object
If storage capacity is increased to hold more data, then flight duration is improved, but device weight and cost increase
Solution Approach 1:
The patent applies dynamics by making the data retention strategy adaptive rather than static. The determination unit continuously monitors storage capacity and adjusts the data collection rate accordingly, allowing the system to maximize flight duration by dynamically balancing data accumulation with available storage, eliminating the need for oversized fixed storage capacity
Data Source
AI summary
A controller 13 of the information processing device 1 according to the present embodiment is configured to acquire measured data outputted by a sensor group 2 that is measurement equipment. Then, the controller 13 is configured to determine a compression mode of the measured data, based on the compression related information I1 regarding compression mode of data in accordance with a position and/or a posture. Then, the controller 13 compresses the measured data based on the determined compression mode.