Suitability of the Pulnix TM6CN CCD camera for photogrammetric measurement

The Pulnix TM6CN CCD camera appears to be a suitable choice for many close range photogrammetric applications where the cost of the final system is a factor. The reasons for this are: its small size, low power consumption, pixel clock output, variable electronic shutter, and relatively high resolution. However, to have any confidence in such a camera a thorough examination is required to assess its characteristics. In this paper an investigation of three of these cameras is described, and their suitability for close range photogrammetry evaluated. The main factors assessed are system component influences, warm-up effects, line jitter, principal point location and lens calibration. The influence of the frame-store on the use of the camera is also estimated and where possible excluded. Results of using these cameras for close range measurement are given and analyzed. While many users will have or prefer to buy other cameras, the evaluation of this particular camera should give an understanding of the important features of such image sensors, their use in photogrammetric measuring systems and the processes of evaluating their physical properties.