Unused function PrepareDistortedPix()

[amitdo]

@theraysmith,

The new (c1c1e42) function PrepareDistortedPix() in training/degradeimage.h is not being used currently.
https://github.com/tesseract-ocr/tesseract/blob/4efc539f512bf/training/degradeimage.h#L38

Are you going to fix that?

[amitdo]

@theraysmith

Another try... hope you'll notice. Please read my above message (at !#1052).

Please also see #1024

[theraysmith]

It is used internally at Google.
Text2image could be modified to use it too.

[Shreeshrii]

Text2image could be modified to use it too.

That would be great. This is what I referred to in - tesseract-ocr/tessdata#69 (comment)

[Shreeshrii]

Please see #2221
That gives an indication that this function might have been used while training the _fast models.

@stweil Can this or parts of it be added to the currently used degradeimage function?

[amitdo]

tesseract/src/training/degradeimage.cpp

Lines 184 to 185 in 5fdaa47

	if (invert && randomizer->SignedRand(1.0) < 0)
	pixInvert(distorted, distorted);

[Shreeshrii]

Partial implementation via #2259