A vasculature imaging device includes an optical camera (10), a display (12), an electronic processor (14) connected to operate the optical camera and the display, and a non-transitory storage medium (16) storing instructions (18) readable and executable by the electronic processor to perform a vasculature imaging method (20). That method includes: operating the optical camera to acquire color video； computing a temporal variation of values of pixels of the color video； identifying pixels representing vasculature based on the temporal variation of the values of the pixels； and operating the display to present the color video with highlighting of the pixels representing vasculature. In some embodiments, the vasculature imaging device comprises a cellular telephone (cell phone) or other mobile device (22) with the camera and display being built-in components. The instructions may be an application (app) executable under a mobile operating system (24) run by the mobile device.
