JPG pixel coordinates to PDF coordinates converter?

New Here ,
Feb 04, 2019 Feb 04, 2019

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Hello,

Does anyone have a tool or know of the pixel conversions for a JPG image point to PDF document location?

Regards,

William Johnston

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Acrobat SDK and JavaScript

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correct answers 1 Correct Answer

Adobe Community Professional , Feb 04, 2019 Feb 04, 2019
Images are images, regardless of the file format they are all an array of pixels. The PDF  coordinate spaces are all measured at 72points/inch.  So if you know the image location, width, and height in PDF coordinates, then it's a straight forward conversion to find the location of a pixel. For example, to get the horizontal coordinate:xPDF = xImageCoord + xPixel * ImageWidthPDF/ImageWidthPixelsOf course, how this is done depends on the context. What are you trying to do?

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Adobe Community Professional ,
Feb 04, 2019 Feb 04, 2019

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Images are images, regardless of the file format they are all an array of pixels. The PDF  coordinate spaces are all measured at 72points/inch.  So if you know the image location, width, and height in PDF coordinates, then it's a straight forward conversion to find the location of a pixel.

For example, to get the horizontal coordinate:

xPDF = xImageCoord + xPixel * ImageWidthPDF/ImageWidthPixels

Of course, how this is done depends on the context. What are you trying to do?

Thom Parker - Software Developer at PDFScripting
Use the Acrobat JavaScript Reference early and often

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New Here ,
Feb 06, 2019 Feb 06, 2019

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Hello,

I would like to insert highlighted text from JPG images from Microsoft Azure Computer Vision OCR API.

Thanks for letting me know on the dpi for PDF.

I may need to create a formula.

Thank you.

Sincerely,

William Johnston

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