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SetPicture and Render method problem Started by anjali at 06-30-2008 9:19. Topic has 11 replies. LEAD Support Fo... » Developer » DICOM/Medical I... » SetPicture and Render method problem

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06-30-2008, 9:19 anjali Joined on 08-04-2006 Posts 17 SetPicture and Render method problem Hi, I am using LeadTools 14.5 and VB6 Problem with LeadRasterView1.SetPicture I am getting the image into PictureBox using Render method The Code is like this RasterIO.Load LEADRasterView1.Raster, InputFilename,0, 0, 1 LEADRasterView1.Render Picture1.Hdc, 0, 0, LEADRasterView1.Raster.BitmapWidth, LEADRasterView1.Raster.BitmapHeight LEADRasterView1.Raster.Bitmap = 0 LEADRasterView1.Raster.SetPicture Picture1 RasterIO.Save LEADRasterView1.Raster, outputfilename , 21, 24, 2, 0 The resulted bitmap  is of only 1X1 pixel in size. Why it is not giving me the size same as that of original image size    Report

06-30-2008, 10:44 Qasem Lubani Joined on 08-13-2006 Posts 1,044 Re: SetPicture and Render method problem I will test your code here and see if I can reproduce the issue. I will get back to you as soon as possible. Qasem Al-Lubani LEAD Technical Support www.leadtools.com    Report

07-01-2008, 8:03 Qasem Lubani Joined on 08-13-2006 Posts 1,044 Re: SetPicture and Render method problem I investigated the issue here and here is what I have found.   The device context handle (HDC) you are passing to the Render method is for the surface of the control, not the Picture object inside it. To assign to the picture itself, use code like this instead of using Render: Picture1.Picture = LEADRasterView1.Raster.GetPicture() Qasem Al-Lubani LEAD Technical Support www.leadtools.com    Report

07-01-2008, 9:03 anjali Joined on 08-04-2006 Posts 17 Re: SetPicture and Render method problem Hi, it is not possible to use GetPicture Actually I am loading the annotation on LeadRaster and using the Render I am getting the image along with annotation directly (on PctureBox)there is no need to burn the annotation. And after that I will get the resultant image (image+ann) from picture box into the LeadRaster again using SetPicture. Thats why Render is must. Is there any another way?        Report

07-02-2008, 8:55 Qasem Lubani Joined on 08-13-2006 Posts 1,044 Re: SetPicture and Render method problem If you must use Render, you need to use an HDC that is not 'volatile'. This means if you render to the surface of a control or window, that will be erased when the window gets repainted. One way is to use a LEAD Raster object, create an empty bitmap, and then obtain a non-volatile HDC for that bitmap like this:     RasterIO.Load LEADRasterView1.Raster, InputFilename, 0, 0, 1   Dim ras2 As New LEADRaster ras2.CreateBitmap LEADRasterView1.Raster.BitmapWidth, LEADRasterView1.Raster.BitmapHeight, 24 Dim hDC hDC = ras2.GetBitmapDC LEADRasterView1.Render hDC, 0, 0, LEADRasterView1.Raster.BitmapWidth, LEADRasterView1.Raster.BitmapHeight ras2.ReleaseBitmapDC LEADRasterView1.Raster.Bitmap = 0 MsgBox "no bitmap" LEADRasterView1.Raster.Bitmap = ras2.Bitmap Qasem Al-Lubani LEAD Technical Support www.leadtools.com    Report

07-03-2008, 4:10 anjali Joined on 08-04-2006 Posts 17 Re: SetPicture and Render method problem It 's working . Thank you.      Report

07-05-2008, 9:19 anjali Joined on 08-04-2006 Posts 17 Re: SetPicture and Render method problem According to your suggestion,I am getting the bitmap. After getting this resultant bitmap I want to insert this bitmap into Dicomds Dicomds.Bitmap=LeadRasterview1.Raster.Bitmap and after that call SetBitmapValue function with all parameters with original value . Dicomds.SetBitmapValue(originalCompression, originalPhotometric,originalBitsperpixel, 2, DICOM_SETIMAGE_AUTO_SET_VOI_LUT) the image becomes 16 bit and all the image information is changed. Bitsotred, Highbit LargestImagePixelValue all are changed. Any sugesstions please? I am expecting just bimap is replaced with all data unchanged.        Report

07-06-2008, 7:51 Qasem Lubani Joined on 08-13-2006 Posts 1,044 Re: SetPicture and Render method problem What is the value of the LeadRasterview1.Raster.BitmapBits before you insert the bitmap? What are the values of originalCompression, originalPhotometric and originalBitsperpixel in your code? Qasem Al-Lubani LEAD Technical Support www.leadtools.com    Report

07-07-2008, 1:40 anjali Joined on 08-04-2006 Posts 17 Re: SetPicture and Render method problem Attachment: 1.3.12.2.1107.5.2.5.11067.4.0.1546547922413136.zip I am attaching the DICOM image, from which you can check its compression, HightBit , BitsStored, LargestImagePixelValue and all. I am opening the dicom image with LoadDS, getting dicomds.bitmap into the LeadrasterView1 and doing the above mentioned operation on it, then i want to replace  dicomds bitamp  with this resultant bitmap in LeadRasterView1 for that purpose using SetBitmapValue and then save dicom file using Dicomds.SaveDS. but for every image the bitmapbits are changed to 16 and LargestImagePixelValue with other than original value. Why this is happening?        Report

07-07-2008, 7:49 Qasem Lubani Joined on 08-13-2006 Posts 1,044 Re: SetPicture and Render method problem The DICOM dataset you attached contains a 16-bit image. This means the value of originalBitsperpixel in your code is probably 16. If you don't want it to be 16, pass a different value. Please note that using a Windows device context handle (HDC) and the Render method does NOT work with 16-bit grayscale images, because standard Windows GDI functions do not support this pixel depth. Qasem Al-Lubani LEAD Technical Support www.leadtools.com    Report

07-08-2008, 4:12 anjali Joined on 08-04-2006 Posts 17 Re: SetPicture and Render method problem Why hightbit, bitsored and LargestImagePixelValue are changing?    Report

07-08-2008, 8:50 Qasem Lubani Joined on 08-13-2006 Posts 1,044 Re: SetPicture and Render method problem Since you appear to be inserting a completely new copy of the image that was somehow re-processed and converted from one pixel depth to another, my guess is that all image parameters are changing and that's a normal thing. Whether this behavior is correct for your application or not, it is up to you to decide based on the requirements of the program. If you don't want this to happen, consider revising the steps that convert to a Picture object. Qasem Al-Lubani LEAD Technical Support www.leadtools.com    Report

LEAD Support Fo... » Developer » DICOM/Medical I... » SetPicture and Render method problem

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