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Hello, i have to aquire RGB value for landmark point, how can i get them?
I had get color image coordinate of landmark point, but it is still not Pixel(x, y).
I would appreciate any help.
Thanks in advance.
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Can you confirm please if you are trying to get the RGB value for a particular landmark point on the face, rather than just a general point on an image? Thanks!
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Hi MartyG,
I have to get the RGB value for a particular landmark point on the face.
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Your first message suggested that you were trying to get the XY color image coordinate of a face landmark point. That could be done with the PointF32 instruction, which is part of the QueryPoint instruction for querying specific landmark points on the face.
https://software.intel.com/sites/landingpage/realsense/camera-sdk/v1.1/documentation/html/index.html?pxcpointf32.html Intel® RealSense™ SDK 2016 R2 Documentation
I do not personally know of a way that RGB values could be extracted from a face landmark point, just the XY coordinates of that point.
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Hello Daiby,
Thank you for your interest in the Intel® RealSense™ Technology.
I'll be needing more to time to come up with information that you may find useful. As MartyG commented, I also don't know if there is a way to acquire that value from the face landmark point.
As soon as I have relevant information I'll post it here.
If you have any update or question, don't hesitate to contact us.
Thank you for your patience.
Regards,
Andres V.
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Hello Daiby,
I have to inform you that the RealSense SDK does not provide a native way to acquire the RGB value of a single point in an image.
Although, there are certain methods that you may be interested in:
• System.Bitmap.GetPixel, which returns the color of a specific pixel in a bitmap.o For more information, please check this link: https://msdn.microsoft.com/en-us/library/system.drawing.bitmap.getpixel • PXCMImage.ImageData.ToBitmap, this function returns a Bitmap instance from the ImageData. o If you are interested in knowing more about this method, please follow this link: https://software.intel.com/sites/landingpage/realsense/camera-sdk/v1.1/documentation/html/index.html?tobitmap_imagedata_pxcmimage.html
Please let me know if you find this information useful.
Have a nice day.
Regards,
Andres V.
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Thank you for your suggestion.
I have try the method you mention and I think it works.
Here is the code showing Get Pixel from face region, Set Pixel to a new bitmap, and display only face region.
private void UpdateUI(Bitmap colorBitmap, PXCMRectI32 rect)
{
Color srcColor;
int width = rect.w;
int height = rect.h;
Bitmap dstBitmap = new Bitmap(rect.w, rect.h);
this.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.Normal, new Action(delegate ()
{
if (colorBitmap != null)
{
if (numFacesDetected > 0)
{
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
srcColor = colorBitmap.GetPixel(j + rect.x, i + rect.y);
dstBitmap.SetPixel(j, i, srcColor);
}
}
ColorImg.Source = ConverBitmap.BitmapToBitmapSource(dstBitmap);
}
}
}));
colorBitmap.Dispose();
}
where colorBitmap is a bitmap convert from PXCMImage, and rect is from face detection.
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Hello Daiby,
I'm glad to hear that you found the information provided useful.
Thank you for sharing your experience, the community really appreciates it.
Have a nice day.
Regards,
Andres V.
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