C++ lib image to text reader
Use of the dynamic .DLL lib from c#:
create desired static extern methods with the same name in 'ApiEntry.h' following the next: (DllPath must be the location of the .DLL)
[Pure, DllImport(DllPath, CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)] public static extern void create_templates();
the method void create_templates() should be called first of all. It creates the internal db of initial values that will be used in the future analisis.
Process text image .bmp to extract the string:
Phase 1: call process_document(string file_name);
Get the path of the image and load as bitmap (using Partow header lib):
Phase 2: Detect and separate lines, croping the edges:
Phase 3: Detect and extract the columns ('leters or symbols') in each line, getting something such as follow:
Phase 4: Compare each letter getting percentage of equal pixels with previously loaded and analized template patterns, the best coincidence will be returned, with it's text value updated:
-->> "A"