Information Technology Reference
In-Depth Information
Fig. 5.6 Modes of a reaction-diffusion processor
projector (VGA compatible, 279 ANSI lumens) controlled by a personal computer
is used. High homogeneity of the light emission background of this projector
essentially reduced the experimental error. At the same time, the computer-
controlled projector allowed much greater control over the input information
(change the brightness and contrast, add or delete some of the details of the
information entered, control the state of the medium during the evolution of the
image). Registration of the evolution of the image in the medium was made by a
black-and-white video camera Mintron OS-045D (0.02 lux sensitivity, resolution
600 TV lines) in combination with blue filters that increased image contrast.
Digitized images were recorded in the memory of a personal computer (VidCap
software package) using the mode of randomly selected individual slides or in
movie mode.
A closed static reactor based on a thermostatted petri dish 80-120 mm in
diameter was employed. Three variants of the media were used:
A layer of liquid reagent 0.5-1.5 mm thick, comprising the catalyst of the
reaction, was used for preliminary study of the image processing operations.
In this experiment it was found that the mode corresponding to the original
composition of the reagent is retained in the reactor for 15-20 min.
A medium in which the catalyst of the reaction was immobilized in a thin
(~0.2 mm) layer of solid silica gel was applied to aluminum foil (standard plates
for liquid chromatography were immersed in a 0.0001 M solution of the catalyst
