Cognitive Artifacts for Geometric Reasoning

Geometric Analogy Problems and Perceptual Categories Cognitive Artifacts and Architectures

Cognitive Artifacts

Artifacts pervade our lives, our every activity. The speed, power, and intelligence of human beings are drambtically enhanced by the invention of artificial devices, so much so that tool making and usage constitute one of the defining characteristics of our species. Many artifacts make us stronger or faster, or protect us from the elements or predators, or feed and clothe us. And many artifacts...

Geometric reasoning for computer vision

Some general principles are formulated about geometric reasoning in the context of model-based computer vision. Such reasoning tries to draw inferences about the spatial relationships between objects in a scene based on the fragmentary and uncertain geometric evidence provided by an image. The paper discusses the tasks the reasoner is to perform for the vision program, the basic competences it ...

Geometric Reasoning for Feature Recognition

Recognition of machining features provides a bridge between Computer Aided Design (CAD) and Computer Aided Manufacturing (CAM) of machined parts. CAD produces part descriptions in terms of geometric entities or design features, which need not coincide with the manufacturing features needed by process planning activities. The CAD data must therefore be interpreted so as to generate part represen...

Evaluating the local visibility of geometric artifacts

Figure 1: Original models, distorted models and observer maps (color-coded probabilities of artifact detection) for each stimulus from our dataset. The figure below illustrates the subjective distortion maps from the 2D image experiment from Cadik et al., SIGGRAPH ASIA 2012. We can observe that the amplitudes and distributions of the detection probabilities are similar to our experiments. For i...