Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I've tried it myself. Normally the depth datas are 16bit values. The 13 high-order bits contain the distance and the 3 low-order bits contain the user segmentation map.</p> <p>The user segmentation map is only built if skeleton tracking is active, which I believe was not in your example. Although the rgb values are 24bit it seems to work. I get an image from the segmented hand.</p> <pre><code>Bitmap bmpOrg = new Bitmap("bKawM.png"); Bitmap bmp = new Bitmap(106, 119); for (int i = 0; i &lt; 106;i++ ) { for (int j = 0; j &lt; 119;j++ ) { Color rgb = bmpOrg.GetPixel(i, j); int bit24 = (rgb.B &lt;&lt; 16 + rgb.G &lt;&lt; 8 + rgb.R); int user = bit24 &amp; 0x07; int realDepth = bit24 &gt;&gt; 3; bmp.SetPixel(i, j, Color.FromArgb(realDepth)); } } pictureBox1.Image = bmp; </code></pre> <p>My output:</p> <p><img src="https://i.stack.imgur.com/hLJSu.png" alt="this is what it looks"></p> <p>I've played with it again. First I increased the brightness and contrast in Photoshop. So the rgb values are usable if you don't need the real depth values in millimeters.</p> <p><img src="https://i.stack.imgur.com/yJAHM.png" alt="increased brightness and contrast"></p> <p>Then I tried to get the 16bit values from image with WPF because the image is 16bit grayscale encoded.</p> <pre><code>Stream imageStreamSource = new FileStream("bKawM.png", FileMode.Open, FileAccess.Read, FileShare.Read); PngBitmapDecoder decoder = new PngBitmapDecoder(imageStreamSource, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default); BitmapSource bitmapSource = decoder.Frames[0]; int height = bitmapSource.PixelHeight; int width = bitmapSource.PixelWidth; int stride = width * ((bitmapSource.Format.BitsPerPixel + 7) / 8); byte[] bytes = new byte[height * stride]; bitmapSource.CopyPixels(bytes, stride, 0); for (int x = 0; x &lt; width; x++) { for (int y = 0; y &lt; height; y++) { byte low = bytes[y * stride + x + 0]; byte high = bytes[y * stride + x + 1]; ushort bit16 = (ushort)((high &lt;&lt; 8) | low); int user = bit16 &amp; 0x07; int realDepth = bit16 &gt;&gt; 3; } } </code></pre> <p>I created a new image with the depth values and it looked very strange. I don't find any information what data the image contains. I don't know if it contains the userdata (3 bits) or if the depth is converted somehow before saving to file.</p>
    singulars
    1. This table or related slice is empty.
    1. POReading a depth png image from a dataset
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USbitWorking
    1. USbitWorking
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POReading a depth png image from a dataset
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTBountyClose
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COI ran your code and produced the same output file, however it seems like there is no depth information in this output. Rather than depth information, it's more like a binary one. I was expecting a depth image..
      singulars
      1. PO
      1. USSait
    2. COI've updated my answer. Hope that helps..
      singulars
      1. PO
      1. USbitWorking
    3. COOkay, it turned out that, most likely, the image does not contain more than that contrarily what I thought at the beginning. Thanks for your help.
      singulars
      1. PO
      1. USSait
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload