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Boolean Algebra Operations on Electron Microscope Images

IP.com Disclosure Number: IPCOM000042437D
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-03
Document File: 2 page(s) / 14K

Publishing Venue

IBM

Related People

Krakow, W: AUTHOR

Abstract

Most digital memories and TV frame stores used for electron microscopy use analog arithmetic processors to obtain sums, differences and quotients in realtime. These processors can be digital, but the question of using logical arithmetic functions on different images has not been addressed. In order to do so, logical arithmetic operations on electron microscope images can be obtained using a digital frame store device. The logical operations that can be performed are exclusive-ORing (XOR), ORing, and ANDing of images. Since these are Boolean functions, images are not added and hence many of the rescaling problems associated with additions and subtractions in accordance with prior techniques are avoided.

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Boolean Algebra Operations on Electron Microscope Images

Most digital memories and TV frame stores used for electron microscopy use analog arithmetic processors to obtain sums, differences and quotients in realtime. These processors can be digital, but the question of using logical arithmetic functions on different images has not been addressed. In order to do so, logical arithmetic operations on electron microscope images can be obtained using a digital frame store device. The logical operations that can be performed are exclusive-ORing (XOR), ORing, and ANDing of images. Since these are Boolean functions, images are not added and hence many of the rescaling problems associated with additions and subtractions in accordance with prior techniques are avoided. These functions allow all features to be displayed (OR), similarities to be displayed (AND), and differences to be displayed (XOR). The comparison of different images as a function of time using Boolean algebra operations can be automatically achieved via a digital frame store. Many options are available for digitizing images, setting delay times, algebraic operations, displays of final and intermediate results, and scaling of results. Once the initial parameters are chosen for operation, the program can be made to cycle or count through the different modes, in order to tell the viewer the current location in the cycle of operations. In the steps, the single and multiple frames of TV images are digitized. If desired, multiple frames can be summed in an additive manner or recursively by shifting bits in the data which was previously digitized. Delay times for each digitization and delay times between images can also be part of the program. Additionally, delay times can be interposed after an image processing algebraic manipulation is performed, as, for example, for display purposes. Algebraic manipulations between different images can be readily achieved using different OR and AND functions. Intermediate digitization steps can be displayed, or only the final process result can be displayed. These operations can be cycled through as man...