Study On Imaging Experiment Of A Retina-like Sensor Camera In High Speed Forward Motion

For the fields as imaging guidance, spacecraft docking, and machine vision and so on, the high speed forward motion often exits between the imaging detector and the object in real-time target detection and tracking. During the integration time, the spatial distance between them will change, when there exit forward motion between the imaging detector and the object. This change in the spatial distance can cause the object’s image on the sensor changing continuously, resulting in radial blur. Some researches showing, the new kind of retina-like sensor has advantages in high speed forward motion imaging compared with rectangular array sensors, resulting from the retina-like sensor’s pixels particular distribution.Base on the retina-like CMOS sensor, the paper is mainly researching in experience design on comparing its imaging with a rectangular array sensor. Based on the previous research, the concept of blurriness is put up and the forward motion blur imaging mechanism is analyzed. According to the high-speed imaging characteristics and blurriness area, the maximum speed exceeding 300km/h high-speed motion platform is selected. Relative parameters’ computations and devices’ selections works are done, which are related to the capturing device, the size of the target, the power supply, and the image acquisition equipment and so on. To deal with the shock and vibration of high-speed motion platform, the camera structure of the retina-like CMOS sensor, reinforcing and connection of devices is deigned. Target shelve is also been designed. As driving circuits having been made, dual cameras acquisition and display system is be built, which can realize the imaging capturing, displaying and saving. In addition, image coordinates transformation and interpolation based on sub-pixel interpolation is realized according to the retina-like sensor’s special pixels distribution.