| 摘要 |
PROBLEM TO BE SOLVED: To provide an image monitor system an image storage type that can reduce a retrieval time and storage capacity of image data, record image data at the moment of a fault occurrence point of time with high reliability and recognize the process until the occurrence of a fault to some degree. SOLUTION: A change quantity calculation section 110a calculates image change quantity per unit time denoting rapidness of a time change in an image, a fault level setting section 103a sets a fault level on the basis of the image change quantity per unit time, a recording rate setting section 104a sets a recording rate for a detailed recording when the fault level is high. A monitor log write section 105a writes the image data according to the recording rate together with attached information consisting of the fault level, a monitored place and a monitor time to a monitor log storage section 106. |
