Satellite images abound in information that is sometimes hard to interpret and synthesize; they need additional processing to extract information relevant to the user.

Our image classification services follow that logic. They speed up the production of thematic maps by using an automated or semi-automated process.

Object based classification

The pixel based approach to classification uses only the spectral values of pixels. At Effigis, we use the much more powerful object based classification. Besides the spectral values of pixels, the object based approach defines and takes into account many of an object’s features, such as proximity, slope, elevation, item density, etc. Applied in an urban setting, this approach can, for example, define a park as a space made up of vegetation, walking paths and playgrounds, within an agglomeration.

Contact a representative


Order desk – Satellite images

4101 Molson Street, Suite 400
Montreal (Quebec) H1Y 3L1