Computer Vision Foundations · 免费预览
「Gabor」滤波器组
用「Gabor」滤波器覆盖频率平面，意味着选择一种铺砌方式——矩形或极坐标；缩放旋转副本的极坐标布局与图像频谱相匹配，从而给出多尺度的斑马纹读取。
1. One filter is one question
One filter is one question
2. Rectangular versus polar
Rectangular versus polar
3. What the bank holds at once
What the bank holds at once
4. The transform and its limits
The transform and its limits
5. Why sigma should grow with radius
In a polar Gabor bank, why do the blobs widen as the sampled frequency radius grows?
6. Reading the zebra bank
A polar Gabor bank's fine and coarse maps both respond to a zebra. What does each map show?
7. Counting a bank
A Gabor bank is built with 4 orientations at each of 3 scales. Write the total number of filters.