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Geometric Computer Vision: Difference between revisions
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See [[Convolutional neural network]]. | See [[Convolutional neural network]]. | ||
Traditionally, fixed filters are used instead of learned filters. | Traditionally, fixed filters are used instead of learned filters. | ||
==Edge Detection== | |||
Two ways to detect edges: | |||
* Difference operators | |||
* Models | |||
===Image Gradients=== | |||
* Angle is given by <math>\theta = \arctan(\frac{df}{dy}, \frac{df}{dx})</math> | |||
* Edge strength is given by <math>\left\Vert (\frac{df}{dx}, \frac{df}{dy}) \right\Vert</math> | |||