Pillow Python Tutorial in Details
Python is an amazing language not just because it is easy to learn but it has lots of libraries and tools that make the job easy and cool. One such tool in python is Pillow. In Python, Pillow is one of the most popular tools to deal with digital images. Of course, we have other tools in python too like OpenCV, Scikit-image, PIL, etc. that do the same thing. Why do we use Pillow? After the disconti
audioswitch's research memo: 物体認識に使える特徴ベクトル Histograms of Oriented Gradients
2009年6月10日 物体認識に使える特徴ベクトル Histograms of Oriented Gradients Histogram of Oriented Gradients（HOG）は、大まかに形状を捉えられる特徴ベクトルで、画像の物体認識などに使用されます。 Dalal, N., Triggs, B., Histograms of Oriented Gradients for Human Detection, IEEE Conputer Vision and Pattern Recognition, 886-893, 2005. HOGはその名のとおり、輝度の勾配方向のヒストグラムです。 まず、画像を小さなセルに分割します。 分割したセル上の座標 (x, y) の輝度 I(x, y)から、勾配強度 m と勾配方向 θ
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A lot of people ask me where they can get good-quality images, so I thought it would be good to have one post that I could bookmark and send out to people. I mentioned before that I use iStockphoto.com the most (as well as more expensive sites — though I do that much less now — and high-quality photo discs from Japan). A few people gave links to their favorite free or inexpensive sites as well. Be
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