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Image Analysis ArcGIS

What is Image Analysis

Image analysis is the extraction of meaningful information from images. Mainly from digital images by means of Digital image processing techniques.

This is used as a fundamental tool for recognizing, differentiating, and quantifying diverse types of images, including grayscale and color images, Multispectral images for a few discrete spectral channels or wavebands, and Hyperspectral images.

ArcGIS Image Analysis

ArcGIS Image Analyst expands your arsenal of advanced imagery tools and user experiences to improve and simplify workflows.

Image Analysis window

The Image Analysis window supports the analysis and exploitation of image and raster data in ArcMap.

To open the Image Analysis window, click Windows > Image Analysis.

Image Analysis ArcGIS
Image Analysis Layers

There are five components to the interface—

  1. Layer list
  2. Options
  3. Display
  4. Processing
  5. Mensuration
Layer list

The layer list is a reflection of all the raster layers in the active data frame. A raster catalog layer is not visible nor can it be used within the Image Analysis window.

Options

The Image Analysis Options offer where you can set the defaults for some of the tools in the window, such as defining the red and near-infrared bands to be used with the NDVI tool, the azimuth and altitude values to be used with the Shaded Relief tool, and the standard deviation value to use with the standard deviation stretch method.

ArcGIS Image Analysis Layer list
Display

This Display panel contains tools used to enhance the appearance of data, include contrast, brightness, gamma, and transparency sliders, etc.

Following are some more details on the individual Display extensions and their function.

ButtonName/Option
Adjust ContrastContrast slider
Adjust BrightnessBrightness slider
Adjust TransparencyTransparency slider
Reset GammaGamma slider
DRA (Dynamic Range Adjustment)
Background
TopUp
Stretch
Interactive Histogram StretchInteractive Stretch
Resample
Zoom To Raster ResolutionOne-to-one
Swipe LayerSwipe layer
Flicker LayerFlicker layer
Processing

The Processing panel features easy, one-click access to several commonly used image processing techniques. These include clipping, masking, orthorectification, convolution filters, and mosaicking.

Following are some more details on the individual processing extensions and their function.

Extension ButtonName
ClipClip
MaskMask
Composite BandsComposite Bands
NDVINDVI
Colormap To RGBColormap To RGB
DifferenceDifference
Pan-sharpeningPan-sharpening
OrthorectifyOrthorectify
ExportExport
Add FunctionFunction Editor
Apply Function TemplateApply Function Template
Shaded ReliefShaded Relief
MosaicMosaic
FilterFilter
Mensuration

The Mensuration panel contains tools to measure point, distance, angle, height, perimeter, and area from an image with sensor information.

ArcGIS Image Analyst for ArcGIS Pro

Image Analyst for ArcGIS Pro provides tools for advanced image interpretation, exploitation, and geospatial analysis on an array of imagery modalities.

ArcGIS Pro Image Analyst Extension

The ArcGIS Image Analyst extension provides functions, tools, and capabilities for image and geospatial analysts. For more details click here.