lelandbatey

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results

RobinStamer

genoce:PRIMARY> db.test.find()
{ "_id" : ObjectId("4d84b3dfbf83054e8d71d1b9"), "test" : 5, "arr" : [ ] }
{ "_id" : ObjectId("4d881bd683d4b4608fe01a37"), "test" : 4, "arr" : [ 1, 2, 3 ] }
{ "_id" : 1 }
{ "_id" : "asdf" }
genoce:PRIMARY> db.test.update({}, {$set: {x:{}}}, false, true)
genoce:PRIMARY> db.test.find()
{ "_id" : ObjectId("4d84b3dfbf83054e8d71d1b9"), "arr" : [ ], "test" : 5, "x" : { } }
{ "_id" : ObjectId("4d881bd683d4b4608fe01a37"), "arr" : [ 1, 2, 3 ], "test" : 4, "x" : { } }
{ "_id" : 1, "x" : { } }