tiff

问题 In my work as a grad student, I capture microscope images and use python to save them as raw tif's. I would like to add metadata such as the name of the microscope I am using, the magnification level, and the imaging laser wavelength. These details are all important for how I post-process the images. I should be able to do this with a tif, right? Since it has a header? I was able to add to the info in a PIL image: im.info['microscope'] = 'george' but when I save and load that image, the info

问题 I want to use TIFF images to effectively save large arrays of measurement data. With setting them to mode="I;16" (corresponding to my 16 bit data range), they yield 2MB files (~1000x1000 "pixel"). Which is good. However I am having troubles reconverting them into arrays when it comes to analysing them. For 32bit data (-> "I") the numpy.array command works fine. In case of "I;16" the result is a 0D numpy array with the TIFF as the [0,0] entry. Is there a way to get that to work? I would really

问题 How can I read metada, like coordinates, from a TIFF image in Python? I tried foo._getexif() from PIL, but got the message: AttributeError: 'TiffImageFile' object has no attribute '_getexif' Is it possible to get it with PIL? 回答1: from PIL import Image from PIL.TiffTags import TAGS with Image.open('image.tif') as img: meta_dict = {TAGS[key] : img.tag[key] for key in img.tag.iterkeys()} _getexif() is only meant to be used with JPEG. JPEG requires unpacking of the metadata, TIFF does not. That

问题 I need to convert a multi-page TIFF to a multi-page PDF. I have access to ImageMagick and GhostScript (in *nix environment). How do I do this? Thanks. UPDATE: It turns out that my test file was wrong (it didn't have multiple pages), which made me think my command was wrong. This seems to work for me: convert input.tif output.pdf 回答1: Use a tool called tiff2ps from the tool set provided by libtiff: http://www.libtiff.org/tools.html Once you have the tiff in ps format, you can call ps2pdf to

问题 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

问题 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 ? 回答1: May you dont have too much Ram for this image.You'll need at least some more than 1.3GB

问题 A similar problem with the python gdal module Gdal will not import after several installs (Mac OSX) was solved by modifying my shell profile to ensure MacPorts-installed ports are found, and then using sudo port select python python27 . But this time it's every module in my graphics folder that deals with tiff and png reading and writing that will not import: tiff @3.9.5 graphics/tiff pngpp @0.2.3 graphics/pngpp libgeotiff @1.3.0 graphics/libgeotiff Again, when I run python to import either

问题 I am trying to convert PDF to tif images. I use following code to get the image writers by format. Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName("TIFF"); if (writers == null || !writers.hasNext()) { throw new ImageWritingException(); } This works fine when I run the application standalone in Eclipse. But when I deploy the application to tomcat server in linux, writers==null is false but !writers.hasNext is true resulting to throw Exception. I use maven to build the

问题 Creating tiff file, with LZW compression (default):- System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(800, 1000); Graphics g = Graphics.FromImage(bitmap); g.DrawString("Name: " + Name.Text, outputFont, Brushes.Black, new PointF(0, 20)); g.DrawString("Date Of Birth: " + Date_Of_Birth.Text, outputFont, Brushes.Black, new PointF(0, 40)); g.DrawString("Address: " + Address.Text, outputFont, Brushes.Black, new PointF(0, 60)); g.DrawString("City: " + City.Text, outputFont, Brushes.Black,

问题 Creating tiff file, with LZW compression (default):- System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(800, 1000); Graphics g = Graphics.FromImage(bitmap); g.DrawString("Name: " + Name.Text, outputFont, Brushes.Black, new PointF(0, 20)); g.DrawString("Date Of Birth: " + Date_Of_Birth.Text, outputFont, Brushes.Black, new PointF(0, 40)); g.DrawString("Address: " + Address.Text, outputFont, Brushes.Black, new PointF(0, 60)); g.DrawString("City: " + City.Text, outputFont, Brushes.Black,