Electronic Processing Software

The HoloFringe300K interferometry program is used for the real-time interferometry configurations of holography, shearography, speckle correlation, and projected fringe moiré. This program replaces the special purpose image processing boards that have been previously sold with the K/100 optical systems. The optical heads have been upgraded to use a CCD TV camera with a direct digital output compatible with the IEEE 1394 fire-wire link. This digital output is fed directly into a high-speed computer with dual CPUs, thus eliminating aliasing associated with separate digitization and lowering camera noise. The program collects and processes this data to provide the same holography functions as the earlier processor boards. The new cameras provide 300 Kbyte images with 640 x 480 square pixels, and the resulting images maintain their aspect ratio when exported to other image processing programs. In addition, diagnostic functions such as the ability to read a horizontal or vertical lane of pixel values, or to read pixel values within a designated box, can be easily exported to spread sheet programs for data processing and display.