Reading a Matrix Code

Reference | Code Snippets | dedicated code snippet: Reading Data Matrix Codes

You can read the matrix code in an image automatically as follows:

a. Create an EMatrixCodeReader object In a general content, the term object should be understood with the meaning of a class instance. In EasyObject, an object is a maximally-sized area of adjacent connected pixels belonging to the layer foreground..
b. Call the Read method to return a vector containing the detected and decoded matrix codes in the image.

The Read method provides the following overloads:

□ One overload that takes an ERegion object as an additional parameter to specify more precisely the search area.
□ One overload to specify a search grid when your matrix codes are placed in a regular fashion.

The EMatrixCode2.EMatrixCode instances contain the following information for each found data matrix code:

□ Its decoded string
□ Its codewords (raw bytes)
□ Its position in the image
□ Its logical size
□ Its encoding type
□ Its printing polarity (black on white or white on black)
□ Its grading results (if EMatrixCodeReader.ComputeGrading is True)
□ Its reliability score
□ Methods to draw the data matrix code on the source image