test-slim doesn't work about python-tesseract HOT 10 CLOSED

[deleted comment]

Also, the attached bmp file can be parsed using this code:

print tesseract.ProcessPagesWrapper("p.bmp", _tessApi)

However, it fails if cv image is used:

image=cv.LoadImage("p.bmp", cv.CV_LOAD_IMAGE_GRAYSCALE)
tesseract.SetCvImage(image,_tessApi)
text=_tessApi.GetUTF8Text()       # Prints 'Empty page!!' error message
conf=_tessApi.MeanTextConf()
print text, conf


What's the reason for that? Did I do something wrong?

[deleted comment]

https://code.google.com/p/tesseract-ocr/issues/detail?id=852&thanks=852&ts=13605
82829

The problem aroused because you did not provide sufficient border for 
tesseract. The following python program shall work



import cv2.cv as cv
import tesseract

image0=cv.LoadImage("p.bmp", cv.CV_LOAD_IMAGE_UNCHANGED)
print image0
offset=15
IPL_BORDER_REPLICATE=1
IPL_BORDER_CONSTANT=0
image=cv.CreateImage((image0.width+offset*2, image0.height+offset*2), 
cv.IPL_DEPTH_8U, 3 ) 
cv.CopyMakeBorder(image0,image, (offset,offset), IPL_BORDER_CONSTANT, 
(255,255,255)) 
cv.NamedWindow("Red Eye Test")
#cv.ShowImage("Red Eye Test", image)
#cv.WaitKey(0)
cv.DestroyWindow("Red Eye Test")
api = tesseract.TessBaseAPI()
api.Init(".","eng",tesseract.OEM_DEFAULT)
#api.SetPageSegMode(tesseract.PSM_SINGLE_WORD)
api.SetPageSegMode(tesseract.PSM_AUTO)
tesseract.SetCvImage(image,api)
text=api.GetUTF8Text()
conf=api.MeanTextConf()
image=None
print text
print conf

Yeah, I kinda figured that problem out on myself. I added some border to the 
picture and most of the 'Empty page' errors are gone, although there are still 
a few images still can't be parsed no matter how wide the border I added. Maybe 
it's a matter of the color of the border?

Anyway, what really makes me itchy is the first problem. Had anyone seen that 
error before?

What is "the first problem" you have referred?

The one in the op, that running of test-slim failed at 'ProcessPagesRaw'.

Send me your ssh account and password tben