Image analysis device, pulse detection device, and image analysis method

In an image analysis device, a region-of-interest detection unit detects a region of interest of a living body from an image in which the living body is reflected on the basis of a predetermined algorithm. The pulse detection unit detects a pulse of a living body on the basis of a temporal change in the pixel value of a plurality of pixels included in a region of interest, while reducing the influence of a specific high-brightness pixel having a pixel value equal to or greater than a pixel value threshold value among the plurality of pixels included in the region of interest. 在影像解析装置中，关注区域检测部基于规定的算法，从映出生物体的影像检测该生物体的关注区域。脉搏检测部在使关注区域所包含的多个像素中具有像素值阈值以上的像素值的特定高亮度像素的影响降低的基础上，基于所述多个像素的像素值的时间变化来检测生物体的脉搏。