PROBLEM TO BE SOLVED: To identify an area that is likely to be of the same kind as an operator is paying attention without requiring its visual check, acquire and display attached information of the area.SOLUTION: An image analyzer 1 to analyze observation data 131 acquired from an imaging device 2 comprises a candidates area of interest selection part 104 to select a candidates area of interest that is an space area to which the operator is paying attention from the observation data 131, a search processing part 106 to calculate the degree of similarity between the amount of characteristic of the candidates area of interest and that of a sample and to acquire the attached information 143 associated with the sample from a control database 140 when the degree of similarity is the threshold value or more than that, and an attached information display processing part 107 to display the attached information 143 on a display part 110.
