Version 1.5
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Subsection 15.2.1: Image Slicer Up Section 15.2: Visualizing 3D Image Data Subsection 15.2.3: Image Isosurface

### 15.2.2 Volume Renderer

The Volume Renderer shows a volume rendering of the image stack in the Graphics View. The following options can be set.
• alpha scale - Sets the overall alpha scale, which scales the transparency of the image.
• min intensity - Minimum cutoff image intensity. Voxels with an intensity below this value will be rendered with a transparency set to the value of the min alpha parameter.
• max intensity - Maximum cutoff image intensity. Voxels with an intensity above this value will be rendered with a transparency set to the value of the max alpha parameter.
• min alpha - the alpha (transparency) value used by voxels with an intensity below the min intensity parameter.
• max alpha - the alpha (transparency) value used by voxels with an intensity above the max intensity parameter.
• Amin, Amax - The alpha (transparency) range for voxels with an intensity between min intensity and max intensity.
• Color map - Color map for mapping the grayscale voxels to a color value.
• Lighting effect - If Yes, the voxel color is attenuated based on local normal estimation, which simulates a lighting effect.
• Lighting strenght - The strenght of the ligthing effect, as a value between 0 and 1.
• Ambient color - The ambient color added for the lighting effect.
• Specular color - The specular color added for the lighting effect.
• Light direction - The direction of the light used in the lighting effect.
Subsection 15.2.1: Image Slicer Up Section 15.2: Visualizing 3D Image Data Subsection 15.2.3: Image Isosurface