Legacy ImageMagick Discussions Archive

Here's a bash step-by-step that improves the OCR strike rate considerably. (And here's a Dropbox link to a Before/After image so just X any popups asking you to register.) Before and After http://tinyurl.com/hl4qx5k # Despeckle for f in *.png do file=`convert $f -format "%f" info:` convert $file ...

Hello Snibgo... Here's one I made earlier :-) This is what a scanned fiche with a 100% OCR strike rate looks like... http://tinyurl.com/zc6culq The original scanned image is of such a reasonable quality that all I need do is deskew and crop the image then make it a bit more "solid" using the ...

Hello... Would anyone have any suggestions for bringing an image up to OCR level. The original image is a scan of an extremely faded microfiche. Here is a snippet of the image. It's a Dropbox link so just X the pop-up asking you to join. http://tinyurl.com/zdy5p4r I had to do a colour capture as the ...

What a superb answer.

Thanks very much

Now I just need to sort out a script.

Thanks again
Miguel

Hello... I have a line starting at an (x,y) coordinate and finishing at another (x,y) coordinate. I want the line to be horizontal so I use the -deskew option. The (x,y) coordinates at the start and end of the now horizontal line are slightly different to the original (x,y) coordinates. My question ...

Hello Snigbo... Thanks for replying :-) It's not so much about OCR'ing the images. It's more about making the images look "nice" (for want of a better word). And learning more about IM - specifically looping a copy/paste region by region, IM and databases, and comparing images pixel by pixel. I'm ...

Hello... I'm not sure who to ask (and I'm not even sure this is a thing) but I'd appreciate any thoughts :-) --- I have several dozen scanned images of old and faded microfiche. The microfiche hold lists of names and places. Here is an example of the letter E. As can be seen there are five distinct ...

Thanks Fred and Bonzo.

Managed to make sense of it all now

All the best
Miguel

Hello Fred... Thanks for the examples. Less confused than before but still two questions. 1) I'm guessing that repeating the crop command is a typo as the examples only work when I delete one of the crops... -clone 0 -crop -crop and img -crop -crop 2) I still can't figure out how to incorporate the ...

One thing I noticed is you read the original file in for every crop. Hello Bonzo... Thanks for the advice but I'm having a fundamental "not understanding what's going on" session. I understand using the image-in-memory instead of loading the image each time but all I can come up with is throwing ...

Thanks for the replies :-) I've ended up with the following bash script using the crop command, two loops and two arrays. It seems to work. Apologies for the overuse of comments and overlong variable names. Still a noob. # Draw a striped rectangle convert -size 100x100 xc: -fill red -draw "rectangle ...

Hello... I have an image 100x100 pixels. I am slicing the image into four vertical slices of varying widths. I want the first slice to be 10 pixels wide, the second slice to be 20 pixels wide, the third slice to be 30 pixels wide and the fourth slice to be 40 pixels wide. The height is a constant ...

Hello Fred...

Thanks for that.

So I'll just use my trusty for loop.

All the best
Miguel

Hello... Can I use -lat with mogrify? When I tried the following command... mogrify -lat 10x10+2% *.png ... I got the following error message mogrify: unrecognized option `-lat' @ error/mogrify.c/MogrifyImageCommand/5263 --- The following convert command works fine... convert in_001.png -lat 10x10+2 ...

Thanks Fred. I'll keep on piping then

All the best
Miguel