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Change detection is a common operation/module in remote sensing packages like ENVI or Orfeo toolbox  . It usually involves raster data (satellite images for example).

How's the comparison is done? With what tools? I feel that description is not complete. Or something is missing.

Change detection is done by comparing two raster images that were taken at different times but which cover the same area. As the images cover the same area, the images overlay each other. Imagine two grids stacked on top of each other.

It is then a matter of comparing whether the value of a pixel in the new raster is the same as the value of the pixel in the old raster. Pixels that have changed are then marked. The output is usually a raster that covers the same extents as the two images with the changed areas highlighted. It's a simplification of course but you get the idea :)

Where or in which books I can find more information about Change Detection?

You can start with these documents

• Review Article Digital change detection techniques using remotely-sensed data
• THE STATE OF CHANGE DETECTION IN GIS
• How Change Detection Works

What tools should I use to perform a such analysis using the data in a shpfile? (only open-source please)

You can try out Opticks. It has a change detection plugin.

Change detection is a common operation/module in remote sensing packages like ENVI or Orfeo toolbox. It usually involves raster data (satellite images for example).

How is the comparison done? With what tools? I feel that the description is not complete. Or something is missing.

Change detection is done by comparing two raster images that were taken at different times but which cover the same area. As the images cover the same area, the images overlay each other. Imagine two grids stacked on top of each other.

It is then a matter of comparing whether the value of a pixel in the new raster is the same as the value of the pixel in the old raster. Pixels that have changed are then marked. The output is usually a raster that covers the same extents as the two images with the changed areas highlighted. It's a simplification of course but you get the idea :)

Where or in which books can I find more information about Change Detection?

You can start with these documents

• Review Article Digital change detection techniques using remotely-sensed data
• THE STATE OF CHANGE DETECTION IN GIS
• How Change Detection Works

What tools should I use to perform such an analysis using the data in a shapefile? (only open-source please)

You can try out Opticks. It has a change detection plugin.

Change detection is a common operation/module in remote sensing packages like ENVI or Orfeo toolbox . It usually involves raster data (satellite images for example).

How's the comparison is done? With what tools? I feel that description is not complete. Or something is missing.

Change detection is done by comparing two raster images that were taken at different times but which cover the same area. As the images cover the same area, the images overlay each other. Imagine two grids stacked on top of each other.

It is then a matter of comparing whether the value of a pixel in the new raster is the same as the value of the pixel in the old raster. Pixels that have changed are then marked. The output is usually a raster that covers the same extents as the two images with the changed areas highlighted. It's a simplification of course but you get the idea :)

Where or in which books I can find more information about Change Detection?

You can start with these documents

• Review Article Digital change detection techniques using remotely-sensed data
• THE STATE OF CHANGE DETECTION IN GIS
• How Change Detection Works

What tools should I use to perform a such analysis using the data in a shpfile? (only open-source please)

You can try out Opticks. It has a change detection plugin.

Change detection is a common operation/module in remote sensing packages like ENVI or Orfeo toolbox . It usually involves raster data (satellite images for example).

How's the comparison is done? With what tools? I feel that description is not complete. Or something is missing.

Change detection is done by comparing two raster images that were taken at different times but which cover the same area. As the images cover the same area, the images overlay each other. Imagine two grids stacked on top of each other.

It is then a matter of comparing whether the value of a pixel in the new raster is the same as the value of the pixel in the old raster. Pixels that have changed are then marked. The output is usually a raster that covers the same extents as the two images with the changed areas highlighted. It's a simplification of course but you get the idea :)

Where or in which books I can find more information about Change Detection?

You can start with these documents

• Review Article Digital change detection techniques using remotely-sensed data
• THE STATE OF CHANGE DETECTION IN GIS
• How Change Detection Works

What tools should I use to perform a such analysis using the data in a shpfile? (only open-source please)

You can try out Opticks. It has a change detection plugin.

Change detection is a common operation/module in remote sensing packages like ENVI or Orfeo toolbox . It usually involves raster data (satellite images for example).

How's the comparison is done? With what tools? I feel that description is not complete. Or something is missing.

Change detection is done by comparing two raster images that were taken at different times but which cover the same area. As the images cover the same area, the images overlay each other. Imagine two grids stacked on top of each other.

It is then a matter of comparing whether the value of a pixel in the new raster is the same as the value of the pixel in the old raster. Pixels that have changed are then marked. The output is usually a raster that covers the same extents as the two images with the changed areas highlighted. It's a simplification of course but you get the idea :)

Where or in which books I can find more information about Change Detection?

You can start with these documents

• Review Article Digital change detection techniques using remotely-sensed data
• THE STATE OF CHANGE DETECTION IN GIS

What tools should I use to perform a such analysis using the data in a shpfile? (only open-source please)

You can try out Opticks. It has a change detection plugin.

Change detection is a common operation/module in remote sensing packages like ENVI or Orfeo toolbox . It usually involves raster data (satellite images for example).

How's the comparison is done? With what tools? I feel that description is not complete. Or something is missing.

Change detection is done by comparing two raster images that were taken at different times but which cover the same area. As the images cover the same area, the images overlay each other. Imagine two grids stacked on top of each other.

It is then a matter of comparing whether the value of a pixel in the new raster is the same as the value of the pixel in the old raster. Pixels that have changed are then marked. The output is usually a raster that covers the same extents as the two images with the changed areas highlighted. It's a simplification of course but you get the idea :)

Where or in which books I can find more information about Change Detection?

You can start with these documents

• Review Article Digital change detection techniques using remotely-sensed data
• THE STATE OF CHANGE DETECTION IN GIS
• How Change Detection Works

What tools should I use to perform a such analysis using the data in a shpfile? (only open-source please)

You can try out Opticks. It has a change detection plugin.