3D Graphics in Mira Pro, MX, and the Pro Graphics II Module
This page describes Mira's 3-D capabilities beyond those in Mira
Pro. These features are standard in Mira MX. These capabilities may
also be added to Mira Pro by obtaining the optional Pro Graphics II
Module.
[ Note: This Brief describes only the 3-D features
added by the Pro Graphics II module, not the added features for 1-D
and 2-D visualization. For details, see the
feature comparison.
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3D Plot Window
The
diagram below describes components of the 3D Plot window available with
the Pro Graphics II Module. When a single image is plotted, as opposed
to a multi-image set, the Animation Control Toolbar is not visible (when
not using PG II, only 1 image can be rendered per 3-D window). |
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At left, the toolbar shows 7 tics, indicating that 7
stacked images are rendered in 3-D. They can be animated or blinked,
manually or up to many frames per second, while rotating or changing the
palette or other attributes.
Below, the 2-D image
window uses a rectangle to mark the region. The
3-D rendering is to its right.
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Examples
This example shows a Region of Interest
of a 2-D image of a late-wood cell in both 2-D and 3-D. To get the plot you
don't need to prepare the image in any special way—just outline the region
of interest on your image and click the button. You can tilt, rotate and
zoom in/out on the 3D plot in real time. And if your images form a time
sequence showing some changing feature, simply display them in the window as
usual, mark the region and click the button as described, and you get a
stack of 3D renderings which you can animate and rotate, or change the
palette and other attributes in real-time. And it works for images having
bit depths ranging from 8 bits per pixel through 64 bit per pixel floating
point. |
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TIFF format Image
This 2-D image of wood cells is displayed in
a Mira Image Window and zoomed 4x. A single button click produced the 3-D
view at right using the data inside the image cursor (red). |
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Intensity Surface Plot
This Intensity Surface uses a palette to map the image intensity to grayscale or color.
This technique is often called a "4-D Plot". The plot
attributes may be changed after rendering. |
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Changing the 3-D Plot Attributes
The examples below show variations made
by changing the plot attributes in the 3D Drawing Attributes dialog. |
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Intensity Surface plot in Stepped Ribbon Mode
The Overlay Grid is enabled. A pseudo-color palette is used to
separate Z values. A ribbon plot makes the plot transparent in the column
direction so that data in all rows can be seen from any direction. |
Intensity Surface plot in Stepped Ribbon Mode The
Overlay Grid is disabled. As for intensity surface plot, the apparent
separation of data Z value can be adjusted by changing or manipulating the
palette. |
Illuminated Surface Plot in Ribbon Mode
The Overlay Grid is enabled.
This mode connects pixels with a sloped facet, while the Stepped
Ribbon uses a horizontal cap to show the 2D pixel value
and vertical facets between pixels. |
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Intensity Surface Plot with
Quad Pixels
Continuous surfaces are often best displayed using a quad or triangle
mode and no overlay grid.
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Intensity Surface Plot in Pedestal mode The Overlay Grid is enabled. This representation
shows each pixel as standing columns of data in the Z direction. |
Intensity Surface Plot in Pixel mode
The Overlay Grid is enabled. This shows only
the pixel top to reduce clutter and it allows
the plot to be transparent from all directions. |
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Simple Wireframe Plot
Since the pixel facets
themselves are transparent, this type of plot reduces clutter to an absolute
minimum viewed from any direction.
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