I have a Silverlight application wherein I want to convert colored TIFF image with LZW compression into black and white image with CCITT4 compression.
There is a sample that shows how to Convert System.Drawing.Bitmap to a black and white TIFF.
You should get what you want if you combine the sample above with the answer that shows how to convert a Silverlight image to bytes.
Related
I am using JFreechart to generate some plots, and I found the lines in my plot is blurry, but the demo shows that all the lines are thin and without any blurry, I was wondering if there any to generate good quality plot on a panel.
With more information, I can't explain the rendering and resampling artifact illustrated in your question. Starting from MinMaxCategoryPlotDemo1.java in the demo, I added this line to get the PNG image shown.
ChartUtilities.saveChartAsPNG(new File("temp.png"), jfreechart, 1024, 768);
In particular,
I chose a larger size, as it's generally better to have more pixels than fewer when resampling.
I chose PNG, a lossless image format used in the MinMaxCategoryRenderer API image.
Click to enlarge:
Any one knows the answer?
I create a Jfreechart, and use ChartUtilities.saveChartAsPNG to save the chart into a png image. But when I open the image file, all japanese characters inside the jfreechart are shown as squares.
Please help!!
Thanks,
APF
Is there any way to get pixel RGB in silverlight? I have a PNG image which I'm going to find RGB and alpha of some pixels (I'm going to display ARGB of mouse position on image)
Seems like Bitmap.GetPixel (MSDN) would be a good place to start
I am using ImageTool's PNG encoder to create an image.
I have a Grid that contains multiple TextBlocks, each TextBlock contains dynamic text.
When I create a WriteableBitmap from the grid containing the TextBlocks, I then use ImageTool's encoder to convert the WriteableBitmap to a PNG image.
All works well, however, when I view the PNG image (am saving the file to the hard drive for testing purposes) - the text looks slightly blurred. Is this an issue with the encoder or the WriteableBitmap class? And - has anyone experienced this before and are there workarounds?
Thanks.
I'm a part of ImageTool project but I'm playing as a tester since I'm using this library in one of my project... If you can create a sample then you can probably show us so that we can test in our machine.
You can also try with Joe Stegman's encoder or fJCore JPEG encoder.
Lets say I have a black and white .jpeg image. How could I change the white pixels in the jpeg image to red using the hexidecimal format (ie going from #FFFFFFFF to #FFFF4F4B)?
You could also use a Pixel Shader Bitmap Effect.
Here is a similar example.
if you are using silverlight 3 then you should look at WriteableBitmap
here is a sample