Advanced Image Processing
Crop Scanned Films:
Scanned films are cropped easily using 3D-DOCTOR's template-based "Crop
Film" command.
| Step 1. Scan your film, open it in 3D-DOCTOR.
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Step 2. Use the "Crop Film" command
and adjust the template. You can use a predefined template as well.
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| Step 3. Apply the template to crop the slices and save each
slice into separate image file.
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Step 4. Slices are put together in a stack
using the "New Stack" command and ready for 3D modeling and
visualization.
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Image Cropping Using a Regions of Interest (ROI)
Image slices can be cropped with user-defined region of interest (ROI) to
remove unwanted portions and clean printed text on a film image.
Original Image and a region of interest (ROI) defined (blue polygon):
Cropped image:
Image Re-Slicing
 | Image Reslice: You can reslice an image that has uneven
spacing/thickness between slices to create an image with evenly spaced
slices for more accurate 3D rendering and analysis. |
| Reslice Volume: You can reslice a CT/MRI image
along an arbitrary axis in 3D space. Simply define the 3D
angle and a new image is created. |
| Registration: Register an image against another
image to make the two images in the same orientation and
dimension. This can be done by defining 4 or more control points
among all image slices. You can
then compare them pixel by pixel or fuse them together to
create a new fusion image. Analysis of multi-modality
images is now an easy thing to do with 3D-DOCTOR. |
| Image Fusion/Focus Fusion: You can take a group of microscopy images
acquired at different focus and use 3D-DOCTOR's Focus
Fusion function to stitch them all together to create a
single image with full focus everywhere in the image. |
| Reconstruction: 3D-DOCTOR uses a back-projection algorithm to reconstruct
a volume image from a
series of images taken at regular angle intervals. |
Image Rotation
| Image Rotate: You can use this command to rotate an image
at a user defined angle. |
| Flip Vertical and Horizontal: You can use this command to flip images both
vertically and horizontally. |
Image Classification
The classification function can group voxels of similar colors in either a
grayscale image or a color image together for segmentation and other processing.
Original MRI image:
Classified into 5 groups using the Classification function:
Other processing
| Negate: You can use this command to reverse the
image pixel intensity values. This command is used when am image is
scanned with reverse polarity. |
| /Despeckle: This command is used to remove white
and black noise pixels from a monochrome or binary image. Other
image types should be converted to binary or monochrome first if you want
to use the despeckle command |
| Smooth: You can smooth your image using either the Median
Filter or Average Filter options. |
| IRemove Background: This command employs a specially developed image
filter that automatically removes dark image background from
either 8-bit or 16-bit grayscale images. |
| Edge Detection: You can create an edge-enhanced image from
your original image using either the Sobel Edge detector or the Gradient
Magnitude detector. |
| Image/Conversion: You can convert your images between a variety
of image types, including 24-bit RGB image, 8-bit
palette color image, 16-bit and 8-bit grayscale image, and 1-bit bi-level image. |
| Image/Mosaic: This command is used to create an image mosaic from
multiple images or images with multiple planes. Images with
overlapped borders are correlated to create seamless image mosaic. |
The picture below shows 4 sub images with overlapped regions to be used to
create a seamless mosaic:
This picture below shows the created image mosaic using 3D-DOCTOR's Image
Mosaic function. Overlapped regions are used to find the best stitching
location:
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