Digital image storage and processing for scanning microscopy

The paper describes the design philosophy and development of a digital frame store for use with scanning microscopes. The motivation behind this was the need to provide a reliable high-quality image display, while taking advantage of the powerful electronic echniques for image storage and processing. The speed of scanning, image size and the need for a general-purpose instrument that could be used without programming knowledge precluded the use of a standard microprocessor system. From its original conception as a storage tube replacement, a computer interface was an integral part of the design. This, along with the modular design approach, has enabled the authors to extend and to enhance the system to include real-time grey-scale enhancement and false-colour processing options, while maintaining the low cost and simplicity of use of the basic system