Skip to content

wagner-lab/omr-toolbox

master
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
Code

Latest commit

 

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Matlab omr-toolbox

omr-toolbox

Matlab optical mark recognition (OMR) toolbox for scoring scanned forms. Requires Matlab's image processing toolbox.

The general framwork for this toolbox is as follows:

  1. Perform image registration to a pre-specificed "clean" template. This step cleans up the scanned-in image which can often be crooked, skewed and scaled differently than the template image.
  2. Automatically determines location of "bubbles" and scores bubbles according to user specified thresholds (i.e., looks for bubbles with filled in pixels above some threshold). This ocassionally needs to be tweaked depending on the quality of the scans and of the image registration.
  3. Cleanup scoring errors (missing data, duplicate responses).

This toolbox was written for a specific use case and is not fully documented. Moreover, it generally requires that the user create forms that have the same registration marks in approximately the same locations that were used during development of this toolbox. See template.pdf image for an example. An adobe illustrator file template.ai is also provided that can be edited to create forms that should work with the toolbox.

About

Matlab Optical Mark Recognition Toolbox

Resources

Stars

Watchers

Forks

Releases

No releases published

Packages

No packages published

Languages