Sedona DM Tools vs. ERDAS
Criteria
DMTool
ERDAS
File Access
Ease of file access
4
4
Type of file access
4
3
Dependency on a software specific format
5
2
Number of file formats the software can access
4
3
Information capabilities about a file without display
4
4
File query abilities
5
3
Varieties of images displayed
4
3
Image view and processing features
Annotation capabilities
4
5
Mensuration tools
geopositioning tools
4
4
by points
N/A
4
by lines
4
5
by perimeters and areas
N/A
5
by rectangles
N/A
5
by ellipses
N/A
5
change map unit default fearures
3
5
Zoom methods
Zoom discreet
3
4
Zoom continuous
4
4
Zoom in and out by X amount
N/A
4
Setting zoom limits
N/A
4
Roam or pan methods
5
3
Rotate features
Rotate discrete
5
4
Rotate continuous
5
4
Rotate counter clockwise
5
4
Rotate clockwise
5
5
Image flip capabilities
4
4
Image stretch capabilities
5
4
File access from the viewer
3
4
Display
Speed
2
5
Fit to frame
4
4
Clear display capabilities
N/A
4
Transparent background capabilities
4
4
Dynamic zoom
4
4
User definition of view extent
4
2
View data scaling features
N/A
3
Perspective view
Windows splitting vertical
N/A
4
Windows splitting horizontal
N/A
4
Windows splitting bidirectional
N/A
4
Window tiling for multiple images
N/A
4
number of simultaneous images displayed
3
5
Image to window fitting
4
4
Window to image fitting
3
3
Display to user defined xy coordinate
5
3
image warping and stretching capabilities
5
3
swipe features
N/A
3
flicker / toggle features
4
3
raster image resampling methods
N/A
3
three and multilayer display capabilities
N/A
3
true color, pseudo color, gray scale and relief display
3
3
blend and fade features
N/A
3
subtraction capabilities
3
3
sharpness and edge enhancement
4
2
area or region of interest features
5
4
vector, raster, and annotation capabilities on one viewer
4
4
brightness and contrast adjustment features
4
4
color contrast entire image
4
4
multiple image display features
2
3
viewer image saving capabilities
4
2
display of summary data for the image
3
3
three layer color specific adjustment capabilities
N/A
3
layer arrangement capabilities
N/A
3
image information capabilities from the viewer
3
3
histogram of data features for each layer of an image
N/A
2
Ease of learning measurement
4
4
Image output features
3
3
Quality of user interface or ease of use
4
3
Quality of documentation
3
4
DRG's
5
2
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