INTRODUCTION TO LASER SCANNING MICROSCOPY
LSM 510
Functions
B 40-051 e 07/98
5-59
Render - Surface: Method Description
This method displays the surface of structures in the
Input
sequence shaded as if a light illuminated it.
The position of the light is behind the view point with parallel rays in the direction of the sequence.
The input sequence is segmented into object and background by grey value thresholding: object voxels
are within the grey value range
Grey Low
to
Grey High
.
Each
Output
pixel corresponds to a point at the surface at which the ray in view direction through the
Output
pixels hits the surface. All rays are parallel.
The surface normal required for shading in this gradient renderer is the grey value gradient in the
Input
volume at the surface voxel position. It is not the geometric surface normal. The grey value gradient is
determined from the grey values in a 3x3x3 cube around the surface voxel by averaging e.g. the x-
gradient in y- and z-direction [4].
There is no depth cueing (far objects would appear darker).
The illumination model is a Phong model [1] (surface normal is determined for each
Output
pixel) with
diffuse reflection and specular reflection. Diffuse reflection means that the surface reflects light with
equal intensity in all directions. The brightness of a given surface patch depends not on the view-
direction, but only on the angle between light and surface normal. Specular reflection is observed on
shiny surfaces as a highlight. The light is reflected as from a mirror. The maximum intensity is observed
when the view direction is the one of the mirrored light direction.
Summary of Contents for LSM 510 Inverted
Page 1: ...I LSM 510 Laser Scanning Microscope Operating Manual...
Page 4: ...INTRODUCTION LSM 510 IV B 40 051 e 07 98...
Page 10: ...INTRODUCTION LSM 510 X B 40 051 e 07 98...
Page 12: ...NOTES ON DEVICE SAFETY Contents LSM 510 1 2 B 40 051 e 07 98...
Page 22: ...NOTES ON DEVICE SAFETY Warning and information labels LSM 510 1 12 B 40 051 e 07 98...
Page 24: ...LSM 510 SETUP REQUIREMENTS Contents LSM 510 2 2 B 40 051 e 07 98...
Page 34: ...LSM 510 SETUP REQUIREMENTS Laser Module VIS Laser Module UV LSM 510 2 12 B 40 051 e 07 98...
Page 36: ...INTRODUCTION TO LASER SCANNING MICROSCOPY Contents LSM 510 3 2 B 40 051 e 07 98...
Page 48: ...INTRODUCTION TO LASER SCANNING MICROSCOPY Contents LSM 510 3 2 B 40 051 e 07 98...
Page 231: ...OPERATION LSM 510 Annex B 40 051 e 07 98 4 173 Fig 4 171 Change over of the Scanning Module...
Page 256: ...INTRODUCTION TO LASER SCANNING MICROSCOPY Contents LSM 510 5 2 B 40 051 e 07 98...
