tiff | 易学教程

Convert different picture formats (jpg, gif, png, etc.) to TIFF format

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问题 I am working on reading text from an image through OCR. It only supports TIFF format images. So, I need to convert other formats to TIFF format. Can it be done? Please help by providing some references. 回答1: If you create an Image object in .NET, you can save it as a TIFF. It is one of the many ImageFormat choices at your disposal. Example: var png = Image.FromFile("some.png"); png.Save("a.tiff", ImageFormat.Tiff); You'll need to include the System.Drawing assembly in your project. That

How Do I Create a System.Windows.Media.ImageSource From a Byte Array?

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How do I create a System.Windows.Media.ImageSource from a byte array? I have a byte array, containing the exact and complete file contents of a TIFF image file. I need to display this on the screen, and I have no idea where to even start. Supposedly, it can be done (according to my boss, our dev team has done it in the past, but nobody remembers how). Has anyone here ever done something like this before? Lars Truijens BitmapImage bi = new BitmapImage(); bi.BeginInit(); bi.StreamSource = new MemoryStream(ByteArray); bi.EndInit(); Also see Load a WPF BitmapImage from a System.Drawing.Bitmap and

tiff() resolution and compression are not reliably set in OSX

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问题 The resolution and compression options in tiff() seem to be ignored on my system (see information below). This appears to be the same problem discussed in this SO question; I'm posting the question here so that I can be more specific about my system. For instance the following code, x <- rnorm(1000) tiff("example.tiff", height=3, width=5, units="in", res=200, compression="lzw") hist(x) dev.off() yields a .tiff file that superficially looks fine, but when I use Photoshop to look at the image

Split .TIF file using PIL

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I took a look at the Split multi-page tiff with python file for Splitting a .TIFF File, however to be honest, I didn't fully understand the answers, and I'm hoping for a little clarification. I am attempting to take a .Tif file with multiple Invoices in it and Split it into each page which will then be Zipped Up and uploaded into a database. PIL is installed on the computers that will be running this program, as such I'd like to stick with the PIL Library. I know that I can view information such as the Size of each Image using PIL after it's open, however when I attempt to Save each it gets

converting tiff to jpeg in python

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问题 Can anyone help me to read .tiff image and convert into jpeg format? from PIL import Image im = Image.open('test.tiff') im.save('test.jpeg') The above code was not working. 回答1: I have successfully solved the issue. I posted the code to read the tiff files in a folder and convert into jpeg automatically. import os from PIL import Image yourpath = os.getcwd() for root, dirs, files in os.walk(yourpath, topdown=False): for name in files: print(os.path.join(root, name)) if os.path.splitext(os

Tools to convert multipage PDF to multipage TIFF [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I'm writing a small application to convert several multipage PDF's to multipage TIFF files. Per the other questions and answers on this site, I've tried both ghostscript and ImageMagick however both pieces of software only covert the first page when I run them. Are there any other tools I can use to accomplish

Load a tiff stack in a numpy array with python

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Hallo Stack Overflow community, I am having a little issue with .tif files. I am sure it is only a minor problem that I can´t get around (keep in mind, I am a relatively new programmer). Basically: I have prepared .tif files that are 64x64xn in size (n up until 1000). The image is only a single file that contains all of this slices. I would like to load the image into a (multidimensional) numpy array. I have tried: from PIL import Image as pilimage file_path=(D:\luca\test\test.tif) print("The selected stack is a .tif") dataset = pilimage(file_path) tiffarray = np.array(dataset) expim =

In a TIFF create a Sub IFD with thumbnail (libtiff)

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I know thumbnail.c includes some code that creates a thumbnail and places it in a sub IDF, but there is a lot going on in that code (generating the thumbnail, applying a contrast curve, etc.) and I am having difficulty reproducing just writing a thumbnail. Google has not been any help either. My question is, after I have opened an output file and have a TIFF*, I have my thumbnail data all ready to go (as well as my main image data), how do I add them in such a way that the thumbnail is in a sub IFD of the main image IFD? So after digging around through the libtiff source code for a while, I

How to read a big tif file in python?

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I'm loading a tiff file from http://oceancolor.gsfc.nasa.gov/DOCS/DistFromCoast/ from PIL import Image im = Image.open('GMT_intermediate_coast_distance_01d.tif') The data is large ( im.size=(36000, 18000) 1.3GB) and conventional conversion doesn't work; i.e, imarray.shape returns () import numpy as np imarray=np.zeros(im.size) imarray=np.array(im) How can I convert this tiff file to a numpy.array ? May you dont have too much Ram for this image.You'll need at least some more than 1.3GB free memory. I don't know what you're doing with the image and you read the entire into your memory but i

Ghostscript PDF -> TIFF conversion is awful for me, people rave about it, I alone look sullen [closed]

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问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 4 years ago . My stomach churns when I see this kind of output. http://www.freeimagehosting.net/uploads/e1097a5a10.jpg and this was my command as suggested by Best way to convert pdf files to tiff files gswin32c.exe -q -dNOPAUSE -sDEVICE=tiffg4 -sOutputFile=a.tif a.pdf -c quit What am I doing wrong? (commercial