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Window level problem? Started by Gunasekaran at 05-30-2008 7:04. Topic has 17 replies. LEAD Support Fo... » Developer » General » Window level problem?

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05-30-2008, 7:04 Gunasekaran Joined on 05-07-2008 Chennai,India Posts 174 Window level problem? Hello dude       I am using lead tools version 15.0, working in VB.Net environment using Medical Viewer control. In medical viewer sample project (MediaclViewerDemo)contain window level function only for 8 bits/pixel images  but not for 24 bits/pixel images.How can i apply the window level to 24 bits/pixel images(colour images) in medical viewer control? Thanks in Advance Guna Thanks and Regards Guna    Report

06-02-2008, 4:12 Adnan Ismail Joined on 07-31-2006 Posts 1,361 Re: Window level problem? Guna, Window-leveling is only valid for 12 and 16-bit grayscale images. It will not work for 24bit images. Adnan Ismail LEADTOOLS Technical Support    Report

06-03-2008, 1:11 Gunasekaran Joined on 05-07-2008 Chennai,India Posts 174 Re: Window level problem? Hi dude    Got the result thanks a lot.... Thanks and Regards Guna Thanks and Regards Guna    Report

09-19-2008, 6:25 Gunasekaran Joined on 05-07-2008 Chennai,India Posts 174 Re: Window level problem? Hi      Does anyway to apply window level for 24 bit colour image? Is it possible or not? If yes how can i do that? becos in my application i used 8 bit,12 bit, 16 bit and also 24 bit colour and grey scale images, i don't want avoid window level method its only to 24 bit images. Kindly do the help. Thanks and Regards Guna    Report

09-21-2008, 10:55 Adnan Ismail Joined on 07-31-2006 Posts 1,361 Re: Window level problem? Guna, Window-leveling is only valid for 12 and 16-bit grayscale images. It will not work for 24bit images. If you want to change the intensity, contrast or Paint Gamma of the image without affecting pixel values, that can be done for 24-bit images, but not window leveling. Adnan Ismail LEADTOOLS Technical Support    Report

09-22-2008, 1:45 Gunasekaran Joined on 05-07-2008 Chennai,India Posts 174 Re: Window level problem? sounds good. If we can change the intensity , contrast of the image without affecting pixel values using the mouse movement it would be greate. would be of very helpful if you send us the sample code. Thanks and Regards Guna    Report

09-22-2008, 5:51 Adnan Ismail Joined on 07-31-2006 Posts 1,361 Re: Window level problem? You can do that by handling the mouse events and use the following properties in the RasterImage Class: - PaintGamma Property - PaintContrast Property - PaintIntensity Property For code sample, please see this topic: CustomPaint Event Adnan Ismail LEADTOOLS Technical Support    Report

09-25-2008, 2:34 Gunasekaran Joined on 05-07-2008 Chennai,India Posts 174 Re: Window level problem? Attachment: imageinformation.zip Hi     Thanks for ur reply. i am using this code for getting window level 24 bit images its working but its gives error for big size images. i have attached the image information dialog for ur reference.the following code i am using window level for 24 bit images. *************************************************************************** _Image = m_Viewer.Cells(m_curr_idx).Image         If _Image.BitsPerPixel = 24 And m_window = True Then             m_Viewer.Cursor = Cursors.VSplit             Dim mintensity As Double             Dim mcontrast As Double             mintensity = System.Math.Abs(e.X() - _Image.Width())             mcontrast = System.Math.Abs(e.Y() - _Image.Width())             _Image.PaintIntensity = CInt(mintensity)             _Image.PaintContrast = CInt(mcontrast)             m_Viewer.Refresh()             m_Viewer.Invalidate()         End If ***************************************************************************   if i done anything wrong in my code kindly correct the code and send back to me.. kindly do the help as early as possible.. Thanks and Regards Guna    Report

09-25-2008, 10:07 Adnan Ismail Joined on 07-31-2006 Posts 1,361 Re: Window level problem? Can you send me a sample file you tried to process? Also, can you put your code in a very small project (not your full application) and send it to me in a ZIP or RAR file so I can check it for you? Adnan Ismail LEADTOOLS Technical Support    Report

09-26-2008, 1:01 Gunasekaran Joined on 05-07-2008 Chennai,India Posts 174 Re: Window level problem? Attachment: SampleProjectwithimage.zip Hi Ismail       Here i have attached SampleProjectwithimage.zip its contain Sample project(DrawDemo) and sample file(image1.bmp). kindly do the help as much as possible..if u run the project and load the image and select the Draw line icon in the tool bar and draw the line its increase brightness and contrast... Thanks and Regards Guna    Report

09-28-2008, 6:48 Adnan Ismail Joined on 07-31-2006 Posts 1,361 Re: Window level problem? The demo you sent does not have the MedicalViewer in it and does not use the code you post previously. However, I ran the project and it worked fine with no problems. If your problem is when you try to do the same using the MedicalViewer, please try to create a very small application (not your full project) that show it. Adnan Ismail LEADTOOLS Technical Support    Report

11-12-2008, 0:27 Gunasekaran Joined on 05-07-2008 Chennai,India Posts 174 Re: Window level problem? Hi Adam   I can't able to attach the file. So i sent mail to support@leadtools.com and i mentioned this post. Kindly help me as much as possible... Thanks and Regards Guna    Report

11-12-2008, 10:28 Adnan Ismail Joined on 07-31-2006 Posts 1,361 Re: Window level problem? I ran the demo you sent.  However, I am did not see the problem you are referring to on this post. Can you send me more details about the issue you are facing and how to reproduce it using the demo you sent me? Adnan Ismail LEADTOOLS Technical Support    Report

11-12-2008, 23:30 Gunasekaran Joined on 05-07-2008 Chennai,India Posts 174 Re: Window level problem? Hi Adnan Modify this following code ************************************************************************************************************ _Image = medicalViewer1.Cells[0].Image; if (_Image.BitsPerPixel == 24)                     {                         double mintensity = 0;                         double mcontrast = 0;                         mintensity = System.Math.Abs(e.X - _Image.Width / e.X);                         mcontrast = System.Math.Abs(e.Y - _Image.Width / e.X);                          // Comment this if condition                         //if (mintensity < 1000 & mcontrast < 1000)                         //{                             _Image.PaintIntensity = (int)mintensity;                             _Image.PaintContrast = (int)mcontrast;                         //}                     } ************************************************************************************************************ After done the above modification in that project(which one i have attached the mail (support@leadtools.com)) RUN it... and load the big images like image width 3500  and image height 2500. It will give error... Thanks and Regards Guna    Report

11-13-2008, 10:06 Adnan Ismail Joined on 07-31-2006 Posts 1,361 Re: Window level problem? Guna, Even when I followed your steps and loaded a 24- bit image with(3500x2500) size. I could not get any error. If this happens with a certain image you have, please send it to me in a ZIP or RAR file so I can see the problem. Adnan Ismail LEADTOOLS Technical Support    Report

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LEAD Support Fo... » Developer » General » Window level problem?

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