Hello<br><br> I'm trying to get the depth value from zbuffer by using "GetBufferData" from vtkRenderWindow. Unfortunately, all the depth values are around from 0.995 to 0.999. But I don't think the value range should be so evenly distributed. The expected results should be similar as the Gaussian distribution. In other words, the depth value should be small near the boundary and large near the center. Can anyone tell me how to capture z-value correctly? BTW, Does anyone know how to convert the value from zbuffer into the world coordinate? Thanks in advance!
<br><br> Have a nice day!<br clear="all"><br>-- <br>Sincerely<br>Jianfei Liu