PROBLEM TO BE SOLVED: To provide a moving image speed detecting device capable of speeding up speed detection of an object photographed by a moving image. According to an embodiment, a moving image velocity detecting device includes an imaging unit, a contour enhancing unit, a binarization unit, a connected labeling unit, a feature extraction unit, an inter-frame matching determination unit, and a speed estimation unit. The concatenated labeling means is a concatenated local shape pattern in which a labeled image with a label and a concatenated pattern used to identify the label are set for each label based on a plurality of concatenated images for the binarized image. Output the image. The feature extraction means extracts the type and number of connected patterns for each label as the label feature amount based on the connected local shape pattern image. The inter-frame collation determination means executes label feature collation based on the first label feature amount of the current frame and the second label feature amount several frames before. The velocity estimation means estimates the velocity of the object captured in the moving image corresponding to the label based on the collation result of the label. [Selection diagram] Fig. 1
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