An arithmetic operation device for automobiles configured to be mounted on an automobile and configured to execute an arithmetic operation for controlling traveling of the automobile, the arithmetic operation device comprising: a first arithmetic operation section having a common configuration for a plurality of vehicle models including a vehicle model of the automobile; and a second arithmetic operation section (3A, 3B, 3C) being capable of transmitting and receiving data to and from the first arithmetic operation section and having a configuration in accordance with the vehicle model of the automobile, wherein the first arithmetic operation section incudes an image processor configured to perform predetermined image processing on an output of a camera installed in the automobile, and a memory configured to store an image signal generated by the image processor, and the second arithmetic operation section (3A, 3B, 3C) includes a processor configured to execute an application in accordance with the vehicle model of the automobile using the image signal stored in the memory and to transmit an execution result to the first arithmetic operation section, characterized in that the second arithmetic operation section (3A, 3B, 3C) further includes a second memory configured to store camera information in accordance with the vehicle model of the automobile, and the first arithmetic operation section is configured to read the camera information from the second memory and to set processing contents of image processing in the image processor in accordance with the camera information. a first arithmetic operation section having a common configuration for a plurality of vehicle models including a vehicle model of the automobile; and a second arithmetic operation section (3A, 3B, 3C) being capable of transmitting and receiving data to and from the first arithmetic operation section and having a configuration in accordance with the vehicle model of the automobile, wherein the first arithmetic operation section incudes an image processor configured to perform predetermined image processing on an output of a camera installed in the automobile, and a memory configured to store an image signal generated by the image processor, and an image processor configured to perform predetermined image processing on an output of a camera installed in the automobile, and a memory configured to store an image signal generated by the image processor, and the second arithmetic operation section (3A, 3B, 3C) includes a processor configured to execute an application in accordance with the vehicle model of the automobile using the image signal stored in the memory and to transmit an execution result to the first arithmetic operation section, characterized in that a processor configured to execute an application in accordance with the vehicle model of the automobile using the image signal stored in the memory and to transmit an execution result to the first arithmetic operation section, characterized in that the second arithmetic operation section (3A, 3B, 3C) further includes a second memory configured to store camera information in accordance with the vehicle model of the automobile, and the first arithmetic operation section is configured to read the camera information from the second memory and to set processing contents of image processing in the image processor in accordance with the camera information.