EXPERIMENTS WITH A NEW MESSAGE FORMAT FOR DIGITAL ENCODING OF PICTORIAL INFORMATION.
Research and development technical rept.,
ARMY ELECTRONICS COMMAND FORT MONMOUTH N J
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Ordinarily a black-and-white photograph is digitally encoded in the PCM format the picture is dissected into L2 samples and the brightness of each sample is represented by a binary number of k bits. With the aid of a digital computer and special picturemagnetic-tape interconversion equipment, experiments were performed to evaluate a radically different structure for the picture message. Pictures decoded from the experimental format in four different versions were compared with pictures reconstructed from PCM-format messages having the same or larger number of bits. They seem to indicate that a well-chosen embodiment of the experimental format offers better quality than PCM under the constraints of fixed message length and fixed number of brightness levels. Photographic copies of compared pictures are included in the report. Author
- Computer Programming and Software
- Computer Hardware