Artifact Details

Description

The idea was to build a 1 pixel 'camera' that could be positioned via 2 stepper motors and read four channels of image information for white, red, green, and blue. The lens focused an image on 4 plastic fiber optic light guides which were routed to 4 RCA 931 photo-multiplier tubes, amplified and digitized with a 16 bit data aquisition system. The result was read into a Imlac computer. The Imlac also sent commands to the stepper moters to move the image point.

Image index:
02 - block diagram of the system
03 - setup to scan color chips
04 - high voltage and stepper power supplies
05 - RCA 931 photo-multiplier tube housing and analog amps
06 - RCA 931 photo-multiplier tubes and fiber optics
07 - RCA 931 photo-multiplier tube detail with fiber optics
08 - plot of color filters
09 - plot of color gamut
10 - output of color recognition software using machine learning
11 - training color samples (construction paper)
12 - plot showing color discrimination
13 - plot showing a single scan line with the channels
14 - scan of a picture of a sailing ship
15 - scan of a woman's face (she held very still)
16 - color chips
17 - scan show the identification of some chips
18 - the Imlac setup in our CAD lab
left to right my a/d d/a audio gear serial patch panel etc
the Imlac disk in red
above it and hidden is a small crt used for the scan output
wooden box one of my video terminal
the Imlac vector display
one of my colleagues
(the Imlac computer is under the table
under the stapler is a digitizing tablet
some random bit of lab gear (voltmeter or power supply)
19 - PDP 11-40 and terminal and a teletype at far right with
paper tape (we used paper tape a lot)
20 - a huge Calcomp flat bed plotter
21 - Robert L Belleville
22 - Robert L Belleville's desk showing all the stuff needed to assemple my dissertation
23 - Robert's brother John (he was doing his masters)
24-31 - block diagram of various lab systems

Date

1974

Extent

32 images

Format

TIF

Category

Slide

Credit

Gift of Robert Belleville

Lot Number

X7996.2017