Definiens Developer 7

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Definiens Developer 7 - User Guide 2 Basic Concepts Figure 4: A red, round object. Underneath you can see another object, which you already know to be a human being. Immediately you combine both figures and relate them to each other. Figure 5: A human being. Both objects may be located in front of a third large blue object. Figure 6: A blue object. 20
Definiens Developer 7 - User Guide 2 Basic Concepts The three objects are connected by defined relationships (for example: underneath, or in front of). The features of the objects and their relationships allow you to recognize a child playing a ball in the sky. This cognition process compares your view of the objects and their relationships with the existing knowledge of your memory. Figure 7: What do you recognize? Similar to human vision, the Definiens concept of image understanding is based on a correct segmentation of the visual image content of interest against other visual image content. Segmentation is performed by splitting the image into zoned partial areas of differing characteristics. The segments are called image objects. These image objects can be classified according to particular criteria. The resulting classes are related and arranged in semantic groups, which represent knowledge about the image. This structure of knowledge representation allows automated image analysis. To set up such object-oriented representations of knowledge, Definiens Developer offers an iterative workflow. Put simply, it consists of the basic iterating procedures of segmentation (or reshaping) and classification. Other procedures help in finding image objects and in organizing image analysis. 2.2 Image and Image Layer An image is a set of raster image data. An image consists of at least one image layer based on pixels. Each image layer represents a type of information. The most common image layers are the Red, Green and Blue (RGB) image layers, but there are other image layer types, such as image layers with biomarkers used in life sciences or with Near Infrared (NIR) data used in remote sensing. An image is stored as .tif, .bmp, .frm, or other raster file format. Within Definiens Developer images are represented by scenes. 21
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Definiens Developer 7

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