libtiff.net

Create a Bigtiff (>4GB) File with Bitmiracle Libtiff.net

我的梦境 提交于 2019-12-06 06:34:05
First I want to thank Bitmiracle for this great lib. Even while creating very big files, the memory footprint is very low. A few days ago I ran into a problem where I wanted to create a tiff file bigger than 4GB. I created the tiled tiff file successfully, but it seems that the color of the tiles created beyond 4GB are somehow inverted. Here the code relevant code: Usage: WriteTiledTiff("bigtiff.tiff",BitmapSourceFromBrush(new RadialGradientBrush(Colors.Aqua,Colors.Red), 256)); Methods: public static BitmapSource BitmapSourceFromBrush(Brush drawingBrush, int size = 32, int dpi = 96) { //

How can I get the StripOffsets tag to stay the same when using the LibTiff.Net 2.3 library?

廉价感情. 提交于 2019-12-04 19:48:38
I have an original image that has a tag StripOffsets = 768. When I edit the image in memory and then write it back to a file I try to specifically set the StripOffsets tag manually to the same value of the original which is 768 (using the following method). //Set the height for the page output.SetField(TiffTag.ROWSPERSTRIP, ttPage[i].Height); //Set the offset for the page output.SetField(TiffTag.STRIPOFFSETS, ttPage[i].StripOffset); For some reason the end results is StripOffsets = 8. Why will it not set the StripOffsets the way I want? On a side note that also effects my "Page offset" shown

How to display TIFF (in form of Byte[]) on Silverlight Image control

天涯浪子 提交于 2019-12-04 07:55:13
I created a window service to put all of my TIFF files into database and stored them as Byte[] . Now I want to be able to display them through Silverlight Image control So i use the Converter during binding XAML in order to convert the Byte[] to Bitmap because the Image.Source only accept eitheir URI (I don't have the file stored on server so can't use this method) or Bitmap . BitmapImage bmi = new BitmapImage(); if (value != null) { ImageGallery imageGallery = value as ImageGallery; byte[] imageContent = imageGallery.ImageContent; string imageType = imageGallery.ImageType; using (MemoryStream

Convert TIFF to 1bit

耗尽温柔 提交于 2019-12-02 17:38:36
问题 I wrote a desktop app which converts an 8bit TIFF to a 1bit but the output file cannot be opened in Photoshop (or other graphics software). What the application does is it iterates every 8 bytes (1 byte per pixel) of the original image then converts each value to bool (so either 0 or 1) saves every 8 pixels in a byte - bits in the byte are in the same order as the pixels in the original image The TIFF tags I set: MINISBLACK, compression is NONE, fill order is MSB2LSB, planar config is

Open huge TIF in .NET and copy parts to new image

房东的猫 提交于 2019-11-28 10:53:39
I'm looking for a library that can open and copy sections of a large TIFF file. I've looked at LibTiff.Net which opens the file very quickly but it doesn't have any functions for cropping or copying sections of the image. My image is 100,000 x 100,000 pixels upwards and creating a System.Drawing.Bitmap of that size crashes the application so converting to a Bitmap first is not an option. Can anyone recommend a .NET library? If your file is less than 4GB on disk than I recommend you to take another look at LibTiff.Net. Even with such large images you have some options. First of all, check

Open huge TIF in .NET and copy parts to new image

孤街浪徒 提交于 2019-11-27 05:57:35
问题 I'm looking for a library that can open and copy sections of a large TIFF file. I've looked at LibTiff.Net which opens the file very quickly but it doesn't have any functions for cropping or copying sections of the image. My image is 100,000 x 100,000 pixels upwards and creating a System.Drawing.Bitmap of that size crashes the application so converting to a Bitmap first is not an option. Can anyone recommend a .NET library? 回答1: If your file is less than 4GB on disk than I recommend you to

Using LibTiff from C# (to access tiled TIFF images)

随声附和 提交于 2019-11-26 12:31:57
问题 I\'d like to use LibTiff to access very large TIFF files. I need functions like multiple pages and tiles, and so LibTiff seems to be the right way to go. Can anyone help me on how to use LibTiff from C#? I\'ve found some links (like blog.bee-ee which contained partial code. But I couln\'t get beyond getting a version. I\'ve looked at FreeImage but found it not suitable (pictures are approx. 800 MPixel 8 or 16 bit grayscale --> 800-1600 MByte) size and I can\'t load it in memory in a 32-bit