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GeneralRe: T[,] can't be cast to object[,] ? Why not? Pin
Matthew Klein25-Oct-10 10:17
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QuestionDynamically Load Referenced Assembly Pin
Adam R Harris25-Oct-10 6:32
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AnswerRe: Dynamically Load Referenced Assembly Pin
Nish Nishant25-Oct-10 6:48
sitebuilderNish Nishant25-Oct-10 6:48 
GeneralRe: Dynamically Load Referenced Assembly Pin
Adam R Harris25-Oct-10 6:53
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AnswerRe: Dynamically Load Referenced Assembly Pin
Ennis Ray Lynch, Jr.25-Oct-10 7:17
Ennis Ray Lynch, Jr.25-Oct-10 7:17 
GeneralRe: Dynamically Load Referenced Assembly Pin
Adam R Harris25-Oct-10 7:57
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QuestionHttpWebRequest/Response in a Duplex way? Pin
softwarejaeger25-Oct-10 3:37
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AnswerRe: HttpWebRequest/Response in a Duplex way? Pin
Adam R Harris25-Oct-10 6:38
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TheyCallMeMrJames25-Oct-10 9:56
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QuestionRegistering for system power states. Pin
HalliHaida25-Oct-10 3:18
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AnswerRe: Registering for system power states. Pin
_Erik_25-Oct-10 5:35
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AnswerRe: Registering for system power states. Pin
Luc Pattyn25-Oct-10 6:21
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QuestionCreate a list for a base class from two list of dervided classes Pin
Mc_Topaz25-Oct-10 2:42
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AnswerRe: Create a list for a base class from two list of dervided classes PinPopular
OriginalGriff25-Oct-10 3:13
mveOriginalGriff25-Oct-10 3:13 
GeneralRe: Create a list for a base class from two list of dervided classes Pin
Mc_Topaz25-Oct-10 6:04
Mc_Topaz25-Oct-10 6:04 
GeneralRe: Create a list for a base class from two list of dervided classes Pin
OriginalGriff25-Oct-10 8:36
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QuestionProcessing scanned images. Pin
ameyakoshti24-Oct-10 22:43
ameyakoshti24-Oct-10 22:43 
AnswerMessage Closed Pin
24-Oct-10 23:19
stancrm24-Oct-10 23:19 
GeneralRe: Processing scanned images. Pin
ameyakoshti25-Oct-10 2:07
ameyakoshti25-Oct-10 2:07 
AnswerRe: Processing scanned images. Pin
Keith Barrow25-Oct-10 1:42
professionalKeith Barrow25-Oct-10 1:42 
This is a relatively complex task, even though it doesn't seem like it.

1st you need an algorithm to find the answers. If you can make the questions on the exam one per page or a fixed size you'll reduce the complexity, as would fixing the position of the answer grid. This helps with finding the answers in the scans by reducing the area they appear in. Another solution would be to print some solid bars on the side of the page and find those, they should be level with the answer. If the bars are skewed (e.g. the scan is skewed) you should be able to work out the rotation from there. If the bars are on the wrong side the scan is upside down which could happen. You can then straighten the image and re-find the answer

Once you know where the answer grid is A neural network would be easy to train for yes/no ABCDE type answers if you are so inclined(especially if the number of choices is fixed, the NNW takes the answer squares area pixels as input, and categorises to a number of outputs each representing and answer. That said, an algorithm might just be easier, say identifying the squares and finding which, in order has the most black pixels.

The first step will probably need the scan colour depth reduced to 1-bit to make, this makes processing the image easier, and requires less memory if processing lots of scans. You'll also need a

GeneralRe: Processing scanned images. Pin
ameyakoshti25-Oct-10 21:01
ameyakoshti25-Oct-10 21:01 
AnswerRe: Processing scanned images. PinPopular
OriginalGriff25-Oct-10 2:14
mveOriginalGriff25-Oct-10 2:14 
GeneralRe: Processing scanned images. Pin
_Erik_25-Oct-10 5:55
_Erik_25-Oct-10 5:55 
QuestionC# Application For MAC by using MONO Pin
Anubhava Dimri24-Oct-10 22:39
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AnswerRe: C# Application For MAC by using MONO Pin
OriginalGriff24-Oct-10 22:53
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