OCR PreProcess

Operation

choice

Extract Largest Rect

Operations of Process, one of {Extract Largest Rect, Auto Rotate}

Image

fileread

Image file to process

Save Temp Images

False

False

If this flag is set then next 7 temporary image files are created for debugging purpose: .01-gray. 02-blurred. 03-white. 04-edged. 05-contours. 06-10large-countour. 07-receit-contour.

Target Image

Fase

filewrite

If this target file is not given, default result image file must be {finename}.result.{ext}, for example the result for 01.jpg is 01.result.jpg otherwise given result image file will be used.

Gray Result

False

False

When this flag is true result image changed into gray scale.

B/W Threshold

False

False

When this flag is true result image changed into Black/White scale. Note that this flag is valid only Gray Result is set.

B/W Blocksize

False

int

21

This is the block size of black/white threshold. This value is valid only B/W Threshold is set.

B/W Offset

False

int

5

This is the offset of black/white threshold. This value is valid only B/W Threshold is set.

Rot Fill Color

False

(255,255,255)

When image is automatically rotated by Auto Rotate operation filling area at the edge of image can happen and this area must be filled with specific color. Format is (R,G,B) each value has the value between 0 and 255. Default is white, (255,255,255).

0

Success

1

Invalid image file to process

2

Invalid operation

98

Parsing error for Parameters or Options

99

Else exceptional case