fschultz / netimagelibrary Goto Github PK

Hello Frederik,

I am curently trying to upgrade my CineFilm digitization tools from Home to WPF.
I got the following warnings when I do the debugg compilation using .NET 5.08
I think you might be interrested in this.

When i try to create a jpg from a png stream, tha background of the jpg image is black.
I try this:

        using (var Temp = System.Drawing.Image.FromStream(str))
        {
            using (var Image = new KalikoImage(Temp))
            {
                Image.BackgroundColor = Color.White;

                using (var DoneStr = new MemoryStream())
                {
                    Image.SaveJpg(DoneStr, 90);
                    DoneStr.Position = 0;

                   // Save stream
                }
            }
        }

What is wrong?

What is the most efficient way to get the contents of KalikoImage into a PictureBox.Image?

Many thanks

Do you have any doc on how to use the new chroma key filter (preferably c#).

Hello Fredrik,
you can probably remember me, the person which coded the CineStripScanner probably one of the very first users of the the Kaliko Image Library FastFilters to apply Unsharpmask to scanned Cine Film Strips.

I am now doing a new program (CineFrameGrabber) a program that should grab frames of a Cine Film (Super 8 or Normal 8) using a Digital Microscope and a stepper motor to advance the frames.
This creates some problems in synchronizing the various devices (the videocapture Device, the Serial Port
with the stepper motor and my program ). Therefore I have to use the TPL because I have to wait for the completion events of these devices.

But I do have a problem when saving images with Kaliko (under Windows 10 Home Edition 64 Bit Creators Edition). I am using VS Community 2017 .NET 4.5 and C# .

This is the code snippet I created

.....
using Kaliko.ImageLibrary;
using Kaliko.ImageLibrary.FastFilters;
using Kaliko.ImageLibrary.Filters;
using System.Drawing.Imaging;
....

....
if (snapshotSelected)
{
captureFrame.Snapshot();
}
else
{
requestImage = true;
}
taskG = new Task(new Action(showAndSaveImage));
taskG.Start();
taskG.Wait();
.......
......

    public static void showAndSaveImage()
    {
        KalikoImage theGrabbed;   // the grabbed cine film image
        int    imageNrI = ExecutionForm.actImgNo;
        String targetFile;
        string imageNrS;
        string fillZeros = "000000";
        int nrLen = 0;
        string imgType = DefinitionForm.activeInstance._imageType;  // JPG or PNG

/line 250/ Console.WriteLine("0250 showAndSaveImage started");
try
{
if (ExecutionForm.snapshotSelected == true)
{
ExecutionForm.picBoxImage = (Image)new Bitmap(ExecutionForm.aSnapshotFrame, ExecutionForm.picBoxSize);
theGrabbed = new KalikoImage(ExecutionForm.aSnapshotFrame);
}
else
{
ExecutionForm.picBoxImage = (Image)new Bitmap(ExecutionForm.aVideoFrame, ExecutionForm.picBoxSize);
theGrabbed = new KalikoImage(ExecutionForm.aVideoFrame); ;
}
if (theGrabbed != null)
{
if (DefinitionForm.activeInstance._sharpenOn == true)
{
Kaliko.ImageLibrary.FastFilters.FastUnsharpMaskFilter unsharpMaskFilter =
new Kaliko.ImageLibrary.FastFilters.FastUnsharpMaskFilter(DefinitionForm.activeInstance._radiusF,
DefinitionForm.activeInstance._contrastF,
DefinitionForm.activeInstance._thresholdI);
theGrabbed.ApplyFilter(unsharpMaskFilter);
}

                imageNrS = fillZeros + Convert.ToString(imageNrI).Trim();
                nrLen = imageNrS.Length;
                imageNrS = imageNrS.Substring((nrLen - 6), 6);
                ExecutionForm.actImgNoS = DefinitionForm.activeInstance._actProjectId +  DefinitionForm.activeInstance._subDirName + imageNrS + "." + DefinitionForm.activeInstance._imageType;
                targetFile = DefinitionForm.activeInstance._actTargetSubFolder + actImgNoS;
                switch (imgType)
                {
                    case "JPG":

/line 309/ theGrabbed.SaveJpg(targetFile, 90); // Common GDI+ error
break;
case "PNG":
theGrabbed.SavePng(targetFile);
break;
default:
theGrabbed.SavePng(targetFile);
break;
}
ExecutionForm.theRetVal = true;
}
else
{
ExecutionForm.theRetVal = false;
}
}
catch (Exception ex)
{
ExecutionForm.theRetVal = false;
Console.WriteLine("315 ex = " + ex);
}
}

And that is what I get. ( Always returnValue = false; !!! due to the Exception occured) .
What am I doing wrong. What is a common GDI+ error. I do nothing special except using
the Task Parallel Library (TPL) of MS .NET 4.5

This is the output of System.WriteLine:
ExecutionForm.txt

0250 showAndSaveImage started
"CineFrameGrabber.exe" (CLR v4.0.30319: CineFrameGrabber.exe): "C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Drawing.resources\v4.0_4.0.0.0_de_b03f5f7f11d50a3a\System.Drawing.resources.dll" geladen. Das Modul wurde ohne Symbole erstellt.
Ausnahme ausgelöst: "System.Runtime.InteropServices.ExternalException" in System.Drawing.dll
315 ex = System.Runtime.InteropServices.ExternalException (0x80004005): Allgemeiner Fehler in GDI+.
bei System.Drawing.Image.Save(String filename, ImageCodecInfo encoder, EncoderParameters encoderParams)
bei Kaliko.ImageLibrary.ImageOutput.SaveFile(KalikoImage image, String fileName, Int64 quality, String imageFormat, Boolean saveResolution)
bei Kaliko.ImageLibrary.KalikoImage.SaveJpg(String fileName, Int64 quality)
bei CineFrameGrabber.ExecutionForm.showAndSaveImage() in D:\C#Prog\Projects\CineFrameGrabber\CineFrameGrabber\ExecutionForm.cs:Zeile 309.

Many Thanks for your assistance
Wolfgang Kurz
[email protected]

The full method is atached as txt File. ExecutionForm.txt (rename it to .cs if needed)

my png's bit depth is 24, but SavePng method is 32, which increase the size of the image

Hi.

I have this:
private void CreatePngImage(Stream str)
{
using (var Temp = System.Drawing.Image.FromStream(str))
{
using (var Image = new KalikoImage(Temp))
{
}
}
}

But on some image i get this:
A Graphics object cannot be created from an image that has an indexed pixel format.
on
at System.Drawing.Graphics.FromImage(Image image)
at Kaliko.ImageLibrary.KalikoImage..ctor(Image image)
at MainImage.CreatePngImage(Stream str)

I have try this:

private void CreatePngImage(Stream str)
{
using (var Temp = System.Drawing.Image.FromStream(str))
{
using (var NewBitmap = new Bitmap(Temp.Width, Temp.Height))
{
using (var Gr = Graphics.FromImage(NewBitmap))
{
Gr.DrawImage(Temp, 0, 0);
}

using (var Image = new KalikoImage(NewBitmap))
{
}
}
}
}

But i se the same error.

What can i do to fix it?

Hi Fredrik,

I am a developer of DotImaging, minimalist .NET imaging platform. I have seen your library and I am open for a possible collaboration. If you are interested, or you have any comments, you can send a mail to darko.juric2 [at] gmail.com.

Regards,
Darko

P.S.
That was the easiest way to reach you (but probably not the best).

Hi,

I tried to add the Kaliko.ImageLibrary to my WinForms application.

Everything works fine, he recognizes all the code, but when I try to compile I get following error:
The type or namespace name 'Kaliko' could not be found.

Any suggestions?

With kind regards,
Gunther

I'm getting strange issues with the BlitFill method on high resolution images, im using the method to watermark the images on my website with a watermark image ive created. I followed the tutorial to do so, for smaller images it works fine, for others not so much. Ive attached the results below:

image "7.jpg" ( the last one ) is correct.

Is there a plan to upgrade this library to Net Core?
I got a warning.

Hello,
is this library compatible with xamarin android or iOS ?

So I'm mostly confused more than anything as to how this has been working in the past

Both the rows and the columns are using the width of the image to see how many rows and columns there should be.

I've changed rows to be Height on my local copy and its working perfectly now.

Kaliko.ImageLibrary.KalikoImage Line 629 onwards

        public void BlitFill(Image image) {
            int width = image.Width;
            int height = image.Height;
            var columns = (int)Math.Ceiling((float)Image.Width/width);
            var rows = (int)Math.Ceiling((float)Image.Width/width);

            for (int y = 0; y < rows; y++) {
                for (int x = 0; x < columns; x++) {
                    _g.DrawImageUnscaled(image, x*width, y*height);
                }
            }
        }

            MemoryStream memstream = new MemoryStream();


            bitmap2.Save(memstream, System.Drawing.Imaging.ImageFormat.Png);

            KalikoImage imgklk = new KalikoImage(memstream);


            imgklk.ApplyFilter(new UnsharpMaskFilter(150f, 100f, 200));



            imgklk.SavePng(memstream);

            Bitmap bitmap3 = new Bitmap(memstream);

This is my code for filtering my bitmap2 image.But when i use unsharp on imgklk,i feel filtering is aplied because there is noticeably time passing program to return back but im unable to see it on bitmap3,i mean there is no difference between bitmap 2 and bitmap 3.I hope you can help me:)