TRAIN INTERIOR MONITORING METHOD AND TRAIN INTERIOR MONITORING SYSTEM

摘要

In a train interior monitoring method, in order to improve the efficiency in memory-usage, when an event occurs, data containing image information, which has been recorded in a temporary image memory, is recorded in an image memory without any processing in order to reduce the file size of the data. Further, data containing image information is recorded in the image memory represents for only a period of time before and after detection of the occurrence of the event, the period of time being set according to what the event is. After a given period of time has elapsed, the data containing the image information is processed in order to reduce its file size and then recorded in the image memory.

主权项

1. A train interior monitoring method for monitoring an interior of a train and recording information in a monitoring-information recording device that is provided with a temporary memory and a memory, the method comprising:
a step for obtaining image information by using a camera; a step for, by using the monitoring-information recording device, temporarily recording data containing the image information from the camera in the temporary memory; a step for, by using the monitoring-information recording device when an event occurs, recording, for a period of time before and after detection of the event, the data containing the image information which has already been recorded in the temporary memory, in the memory without processing in order to reduce a file size of the data containing the image information, the period of time being set according to what the event is; a step for, by using the monitoring-information recording device, after a given period of time has elapsed,
processing the front half of the data containing the image information, which has been recorded in the temporary memory, in order to reduce the file size of the data containing the image information, andrecording the processed data in the memory; and a step for, by using the monitoring-information recording device, discarding the front half of the data containing the image information held in the temporary memory, which corresponds to the front half of the data containing the image information that has been recorded in the memory.