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Hi @yixuan,
I'm trying to understand the Lanczos method, mostly via Golub & Van Loan's [Matrix Computations](https://books.google.com/books?id=5U-l8U3P-VUC&lpg=PP1&ots=7-HCRjYMan&dq=matrix%20compu…
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## Description
I thought "Bicubic" which is used in raster graphic editors like Photoshop, GIMP and so on used "Bicubic interpolation", but, I hear that they really use Lanczos filter or Mitchell-Net…
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Sometimes images can take a long time to convert to a cross stitch guide. I don't want to implement a hard limit on image size, but would like to have the option to limit, say, the width, by pixels.
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UMAP uses a sparse spectral clustering function for one of its initialization strategies. UMAP creates a sparse adjacency matrix from the weighted nearest neighbors, but a more general-use implementat…
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### Describe your suggested feature
Often Manga scanlations have a lower resolution than modern phone and tablet screens, which means they will get scaled up while displaying them. This results in …
radry updated
2 months ago
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・SLEPc
Lanczos法のルーチンあり slepc-3.4.3/src/eps/impls/krylov/lanczos
いろんな直交化を試す。
外部パッケージとしてARPACKが呼べるので，それを試す。→手間がかかるのでやりたくない
・Anasaziには，Lanczos法のルーチンはない。
Stewart p.306のFig1.1のstagnationを再現してみる。
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### 🚀 The feature, motivation and pitch
Scipy provides the following functions in its `special` module:
| Function | Description |
|----------|-------------|
| [`beta(a, b[, out])`](https://docs…
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The difference between an imagemagick sampling from a 350x350 pixel source down to 325x325 is noticeably inferior to a downsampling from resolutions at least twice as large as the requested size. It …
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Would be great! if be implementing some of great zooming algorithms such as S-Spline inside Bilinear and Bicubic resize methods.
http://www.benvista.com/photozoompro
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I made a python script for resizing images (using pillow) then scaling them back again using waifu2x-caffe. I noticed when looping this (resize, waifu2x, resize, waifu2x and so on) that the more itera…