An auxiliary device includes a first interface of a bandwidth higher than about 1 Gbps for connecting a camera module, a second interface of a bandwidth higher than about 1 Gbps for connecting an image analysis device, a buffer, and a processor connected to the first interface, the second interface, and the buffer. The processor reads commands, which contain a set of predetermined parameters of the camera module, via the second interface and transmits the set of predetermined parameters to the camera module via the first interface. The processor also reads frames of image from the camera module to the buffer via the first interface at a rate above about 1 Gbps, and reads the frames of image from the buffer to the image analysis device frame by frame via the second interface at a rate above about 1 Gbps.