| 摘要 |
A method for data compression includes reading first data representing sensor data capture, compressing the data with a lossless algorithm, transmitting the compressed data as a reference frame, reading subsequent data, calculating a delta between the first data and the subsequent data, compressing the data delta, and determining if the compression ratio of the compressed data delta is within a predetermined tolerance threshold. If the compression ratio is within the threshold, transmitting the compressed data delta frame, and repeating the calculating, compressing, and determining steps for subsequent data; Else if the compression ratio is not within the threshold, compressing the current subsequent data and transmitting the result as an updated reference frame. Then repeating the calculating, compressing, and determining steps for subsequent data. A system and a non-transitory computer-readable medium for implementing the method are also disclosed. |
| 主权项 |
1. A method for compressing data from at least one sensor unit in a street lighting assembly, the method comprising:
a coder/decoder (codec) reading a first data group from a memory, the first data group representing sensor data capture by a sensor among a plurality of sensors; the codec compressing the first data group with a lossless compression algorithm; transmitting the compressed first data group as a reference frame across an electronic communication network to a server; reading a first subsequent data group from the memory; calculating a data delta between the first data group and the first subsequent data group; the codec compressing the data delta; determining if a compression ratio of the compressed data delta is within a predetermined tolerance threshold, if the compression ratio is within the predetermined tolerance threshold, transmitting the compressed data delta as a delta data frame across the electronic communication network to the server; reading a second subsequent data group from the memory; and repeating the calculating, compressing, and determining steps for the second subsequent data group. |
