Image sensing device

An image sensing device which images a picture using an image sensor of an XY-addressed-scanning type, comprising:

• an integrator for obtaining a video signal during imaging, integrating the video signal for each of frame periods on any domain in an imaging plane, and calculating an integrated value,
• a pattern determination section for obtaining a first signal integrated value for a current frame from the integrator, comparing the first signal integrated value with a second signal integrated value for a previous frame, that one frame before the current frame, determining whether the first signal integrated value increases, decreases, or remains unchanged from the second signal integrated value, and determining whether a variation pattern on a signal integration value for a predetermined number of the previous frames matches one of flicker patterns which are variation patterns on the signal integrated value on the predetermined number of the previous frames, when a fluorescent lamp flicker occurs, and
• a repetition determination section for determining that the flicker occurs, if the pattern determination section determines that the variation pattern matches one of the flicker patterns, and the variation pattern of the integrated value matches an identical flicker pattern at least over two flicker periods.