P19510: Eastman Museum Digitization Process
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Preliminary Detailed Design

Table of Contents

Team Vision for Preliminary Detailed Design Phase

Team's plan for this phase:

Team's accomplishment for this phase:

Feasibility: Prototyping, Analysis, Simulation

The following pseudocode illustrates how the artifact sizing script functions.

Simulation of Process

Simulation of Process

The following three images give an indication of how the artifact sizing program functions.

Artifact sizing: first, calibration. A 1 inch square test target was used

Artifact sizing: first, calibration. A 1 inch square test target was used

A full image of the test artifact being sized

A full image of the test artifact being sized

The size obtained for the test artifact. It was printed as x,y. The actual size was 2.4 inches long and 0.75 inches wide.

The size obtained for the test artifact. It was printed as x,y. The actual size was 2.4 inches long and 0.75 inches wide.


A simulation was performed in order to estimate the number of images per hour that could be processed with the proposed system.

Simulation of Process

Simulation of Process


Process throughput without stopping:


Drawings, Schematics, Flow Charts, Simulations

In this design phase, the autocropping script previously prototyped was sped up considerably by porting to C++ and making a few design changes. The updated flow chart for the autocrop script can be seen below.
Autocrop script diagram

Autocrop script diagram

Additionally, once the cropped images are obtained and exported, they will still be named the same as their parents. A script was created to rename the cropped images. The flow chart for this script can be seen below.

Cropped image rename script

Cropped image rename script


In the conveyor design, a rangefinder is placed near the end of the conveyor. When an image is moved over this conveyor, triggering it to halt before it takes a dive off of the belt system. This stopping is not instantaneous, however. The timing diagram below displays the sequence of events leading to the conveyor stopping and approximate delays for each event.
Timing diagram for object detection and stopping

Timing diagram for object detection and stopping

It can be seen from the above image that it will take right around one third of a second to halt the conveyor belt. Note that the times on the diagram are approximated worst-case delays. As such, it is very likely that the conveyor will stop quicker than one third of a second. As the conveyor belt's maximum speed is to be set at 6 inches per second, a 1/3 second delay in stopping the conveyor will translate to a distance offset of roughly two inches; the image will be in no danger of plummeting from the conveyor system.

Bill of Material (BOM)

Bill of Materials Diagram

Bill of Materials Diagram

Test Plans

Test Plan

Test Plan

Design and Flowcharts

System Level Drawing

System Level Drawing


Color Bar Extender

Color Bar Extender


Camera Height Adjustment

Camera Height Adjustment


Risk Assessment

Top Risks

Top Risks

Design Review Materials

This presentation was created for this phase's design review.

Plans for next phase

As a team, we are planning to finalize all in-progress elements of our design, as listed below:

For more information, see our individual three-week plans.


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