I'm trying to show TIFF files on a picturebox in C#. My code is here:
pictureBox1.Image = Image.FromFile("someName.tif");
This code is working fine, but some TIFF file isn't displaying on the picturebox (the TIFF file isn't broken). What is wrong?
This TIFF file contains one color image compressed using JPEG 4:4:4.
Although Microsoft functions can handle some sub-types of TIFF, including some JPEG compressed varieties, this particular file uses a flavor of JPEG compression known as "old style". It appears Microsoft functions do not support this flavor.
If you need to load such files in your code, you might have to use a dedicated imaging library.
Related
I have PDF compressed with JBIG2. How can I recompress it to JPEG or any other compression algorithms?
I want to use open source solution like Itextsharp/PDFSharp or any other c# .net open source project.
You would need to decompress the image data, convert it from 1 bit per component to 8 bits per component, then apply JPEG compression.
But it's a bit unusual to convert monochrome images to color. This should increase the size actually. JBIG2 is pretty good for many monochrome images, why do you want to use JPEG compression on it?
Can we have a multi-page JPEG image?
I have a TIFF image file with multiple pages, but it's too big and first thing comes to mind is to change it to JPEG format, however in JPEG I can see only first page. Therefore I realized only TIFF format allows multiple images in one file. Is that true?
Now I tried to apply different EncoderParameters to reduce the size of TIFF file but no luck. Has someone worked on this issue before? How did you manage to reduce the size of TIFF image?
Encoder.Quality does not seem to work with TIFF at all.
EncoderValue.CompressionLZW is the best option to reduce the size, but I still want to reduce the size more.
Changing dpi to 50 reduced the size, but that made image too blurry.
Thanks for any help.
JPEG is technically a image compression, the JPEG file type is actually JFIF which does not support multi-frames. TIFF is an image container that does support the JPEG compression algorithm though, so you should be able to save the TIFF file as small as saving each page as a seperate JPEG added up.
Here is a stackoverflow post that goes into more detail on how to achieve this:
Create multipage Tiff with JPEG compression .NET
JPEG-LS is a lossless image compression algorithm for continuous-tone images. Images compressed using JPEG-LS results to a file with an extension of ".jls".
How may I access this file using C#, or how may I access its bitstream, so that I may further compress it?
I tried using Bitmap in C#, storing it in a Bitmap, but it does not support it.
I tried opening it through notepad, but its been encoded in some unknown format.
You could try CharLS, an open-source JPEG-LS library.
I have to load .tiff file
I did with both Image.FromFile() and Bitmap.FromFile()
But they are throwing OutOfMemoryException
Any solution for how to load this?
I assume that the TIFF file you are trying to load uses a compression that is not compatible with .Net. Namely the JPEG compression is not supported by .Net.
I suggest you try LibTiff.Net (though I cannot tell for sure if it will work):
I use ImageGlue. It can convert a lot more then just tiff.
There is a project on codeproject: "How to Load/Display images with C#".
Take a look at it
There is a possibility that this issue occurred due to multiple image tiff file. In this case, you have to extract individual image files from the source tiff file and then view those frame by frame. Here is a sample code.
http://www.c-sharpcorner.com/Blogs/10924/how-to-save-split-merge-and-view-multipage-tiff-image.aspx
How do I display tiff files on a Silverlight application? I can display any image format except tiff, can anyone help me? Thanks.
I was successful displaying TIFFs in Silverlight. It's easy to port the free LibTiff.NET library to Silverlight, just 3-4 minor tweaks required.
The library itself is quite legacy-like and raw to use and one still needs to have some knowledge about the inner workings of the TIFF format in order to be able to extract the image data the way one needs it.
But it's doable and the bits and pieces can then be chiseled into a WriteableBitmap.
Why don't you try TiffLight? It is a Silverlight control that allows native display of Tiff files in Silverlight.
A Tiff file is a multi-page format so rendering it is not as simple as a png, gif or bmp.
You have of course already found this via a web search but it'll cost you.
Silverlight 2.0 doesn't support tiff images according to this.
However, in the article I believe it explains a way to convert the tiff image to a jpeg or a png (which is supported by Silverlight). However, you'll have to do this processing on the server-side.
I would use an HttpHandler that converts the Tiff using the TiffBitmapDecoder and PngBitmapEncoder classes.
Alternatively, if you can decode the Tiff images in Silverlight, you can display them using a WriteableBitmap.