By G. J. Awcock, Thomas Awcock
Here's a concise and sharply targeted assessment that blends pragmatic dialogue of simple photo processing thought with a revealing and available look--complemented by means of various case studies--at its many present purposes. leading edge paintings in 3-D picture processing can be awarded.
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Extra info for Applied Image Processing
R. , 'A robot system which acquires cylindrical workpieces from bins', IEEE Transactions on Systems , Man and Cybernetics, SMC-12(2), pp. 204-213, March/April 1982. 6. P. Checkland, Systems Thinking , Systems Practice, Wiley, Chichester, 1981. 7. D . Koenig , 'The boards are back in town', Image Processing, 3(3), pp. 18-36, July/August 1991. 8. A. S. Kondoleon, Application of technology-economic model of assembly techniques to programmable assembly machine configuration , Masters Thesis, MIT, Cambridge, Massachusetts, 1976.
With some objects , especially those with smoothly curved surfaces , best results are achieved if light is only emitted from a narrow 'annulus' around the mask . The high contrast image that results from this and other lighting techniques will confuse the automatic gain control (AGC) circuitry featured by almost all video cameras. The AGC will continually strive to turn carefully contrived scenes into bland images with a mid-grey average brightness. Therefore it is critical that cameras used for such work can have their AGC circuits manually defeated .
Another example of effective addition of features exists in PCB manufacturing. This is concerned with the use of 'fiducial marks' which are added to PCB artworks to act as a datum point [5). These marks consist of bold geometric patterns which can be easily located when reproduced on the final PCB. , to 'calibrateout' any dimensional or positional tolerance introduced during the PCB manufacturing process . Fiducial marks have been used for some time with camera-assisted optics and human operators, but the increasing throughput and precision demanded of modern electronic assembly automation are making automatic fiducial mark alignment relatively common.
Applied Image Processing by G. J. Awcock, Thomas Awcock