ghostscript

问题 This code works for me, except all my files are on a network drive. In the example below, the code works only if the file is in the root directory ( c:\ ) as an example. Do I have to replace input.pdf with something like d:\hello space folder\filefolder\input.pdf ? I tried this, but got a sleuth of errors saying directory not found. I tried to do netuse and map the network main drive folder, but that didn't work either. gswin32c ^ -q ^ -dNODISPLAY ^ -c "(input.pdf) (r) file runpdfbegin

问题 This code works for me, except all my files are on a network drive. In the example below, the code works only if the file is in the root directory ( c:\ ) as an example. Do I have to replace input.pdf with something like d:\hello space folder\filefolder\input.pdf ? I tried this, but got a sleuth of errors saying directory not found. I tried to do netuse and map the network main drive folder, but that didn't work either. gswin32c ^ -q ^ -dNODISPLAY ^ -c "(input.pdf) (r) file runpdfbegin

问题 I'm trying to render Pdfs pages into png files using Ghostscript v9.02. For that purpose I'm using the following command line: gswin32c.exe -sDEVICE=png16m -o outputFile%d.png mypdf.pdf This is working fine when the pdf crop box is the same as the media box, but if the crop box is smaller than the media box, only the media box is displayed and the border of the pdf page is lost. I know usually pdf viewers only display the crop box but I need to be able to see the whole media page in my png

问题 I've been working with the turtle module and want to use it as a starting point to work on a simple image recognition program that could recognize numbers/letters. I need to be able to save the turtle as an image I could manipulate- recaling, rotating, etc. to try to regulate the images. I've been researching for hours and cannot seem to find anything that works. I have discovered how to save the Turtle output as a Tkinter canvas: import turtle t = turtle.Turtle() # Draw something canvas = t

问题 I need to extract TIFF images from a bunch of multi-page PDF files from a scanner. During the scanning I specified a resolution of 600dpi. Here is the code I used to generate TIFF images: gs -q -dNOPAUSE -sDEVICE=tiffg4 \ -sOutputFile=a_page%02d.tif a.pdf -r600x600 -c quit This gave me the correct number of TIFF images, however, the image dimension is smaller than I expected. No matter how I change the -r option, the output images have the same size. What happened here? The output TIFF images

问题 I'm trying now to convert a PDF file to JPG, using ImageMagick with PHP and CakePHP. The PDF is in perfect shape and it's right the way it should be, but the image generated from the PDF is always overflowing the borders of the file. Until now, I've tried tweaking the code for the generation with no sucess, reading a lot from the PHP docs (http://php.net/manual/pt_BR/book.imagick.php). Here are the convertion code: $image = new Imagick(); $image->setResolution(300,300); $image-

问题 I have two versions of one same scanned PDF. One of them has an OCR layer. How can I transfer the layer to the other one? I already install Ghostscript, but I don't know what to do next. How to Use Ghostscript 回答1: There's no such thing as an 'OCR layer' in PDF. Most likely what you have is a PDF file which has a scanned image and the text extracted from that image using OCR which has been drawn as 'invisible' text (text rendering mode 3). In general you can't copy and paste text between PDF

问题 I have two versions of one same scanned PDF. One of them has an OCR layer. How can I transfer the layer to the other one? I already install Ghostscript, but I don't know what to do next. How to Use Ghostscript 回答1: There's no such thing as an 'OCR layer' in PDF. Most likely what you have is a PDF file which has a scanned image and the text extracted from that image using OCR which has been drawn as 'invisible' text (text rendering mode 3). In general you can't copy and paste text between PDF

问题 I am trying to convert normal PDF files to PDF/A with this command line: gs -dPDFA -dBATCH -dNOPAUSE -sProcessColorModel=DeviceCMYK -sDEVICE=pdfwrite -sPDFACompatibilityPolicy=1 -sOutputFile=output.pdf input.pdf However, I get the message GPL Ghostscript 9.26: UTF16BE text string detected in DOCINFO cannot be represented in XMP for PDF/A1, reverting to normal PDF output an gs reverts to normal PDF. Apparently, the message stems from this code fragment of gs, but there we read that the message