1. A vehicle-mounted image recognition device that recognizes a vehicle exterior environment using a captured image which is captured with a pair of right and left cameras to execute a plurality of applications, the vehicle-mounted image recognition device comprising: a distribution unit configured to set a stereoscopic-vision image area in captured images captured with the pair of right and left cameras and to set a monocular-vision image area in captured images captured with one camera on the basis of a type of the application which is executed among the plurality of applications, to scan the captured images captured with the pair of right and left cameras along an image scanning line in a right-left direction, and to distribute the captured images to stereoscopic-vision image data obtained by scanning the stereoscopic-vision image areas and monocular-vision image data obtained by scanning the monocular-vision image areas; a stereoscopic-vision image processing unit configured to perform stereoscopic-vision image processing using the stereoscopic-vision image data; a monocular-vision on image processing unit configured to perform monocular-vision image processing using the monocular-vision image data; and an object recognizing unit configured to recognize an object depending on the type of the application using an image processing result of the stereoscopic-vision image processing unit and an image processing result of the monocular-vision image processing unit.