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I compiled it from sources with leptonica. This is a png image with transparent background, which I edited adding a blue color and still this error:

Tesseract Open Source OCR Engine v3.02.02 with Leptonica
Empty page!!
Empty page!!

Here's the image input:

enter link description here

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2 Answers

Tesseract is not trained to recognize handwriting. Don't know what it does with those colours either.

You could try and train tesseract with that handwriting...

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try the psm option.

-psm N
    Set Tesseract to only run a subset of layout analysis and assume a certain form of image. The options for N are:

    0 = Orientation and script detection (OSD) only.
    1 = Automatic page segmentation with OSD.
    2 = Automatic page segmentation, but no OSD, or OCR.
    3 = Fully automatic page segmentation, but no OSD. (Default)
    4 = Assume a single column of text of variable sizes.
    5 = Assume a single uniform block of vertically aligned text.
    6 = Assume a single uniform block of text.
    7 = Treat the image as a single text line.
    8 = Treat the image as a single word.
    9 = Treat the image as a single word in a circle.
    10 = Treat the image as a single character.

Reference: http://hilojack.sinaapp.com/?p=866

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