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benchmarks-wasm32.md

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Benchmarks of fast_image_resize crate for Wasm32 architecture

Environment:

  • CPU: AMD Ryzen 9 5950X
  • RAM: DDR4 4000 MHz
  • Ubuntu 24.04 (linux 6.8.0)
  • Rust 1.81.0
  • criterion = "0.5.1"
  • fast_image_resize = "5.0.0"
  • wasmtime = "25.0.1"

Other libraries used to compare of resizing speed:

Resize algorithms:

  • Nearest
  • Box - convolution with minimal kernel size 1x1 px
  • Bilinear - convolution with minimal kernel size 2x2 px
  • Bicubic (CatmullRom) - convolution with minimal kernel size 4x4 px
  • Lanczos3 - convolution with minimal kernel size 6x6 px

Resize RGB8 image (U8x3) 4928x3279 => 852x567

Pipeline:

src_image => resize => dst_image

  • Source image nasa-4928x3279.png
  • Numbers in the table mean a duration of image resizing in milliseconds.
Nearest Box Bilinear Bicubic Lanczos3
image 25.61 - 111.45 199.95 281.24
resize 11.32 33.48 60.90 113.34 166.20
fir rust 0.36 40.56 76.04 148.68 223.70
fir simd128 0.36 5.19 7.93 14.07 20.86

Resize RGBA8 image (U8x4) 4928x3279 => 852x567

Pipeline:

src_image => multiply by alpha => resize => divide by alpha => dst_image

  • Source image nasa-4928x3279-rgba.png
  • Numbers in the table mean a duration of image resizing in milliseconds.
  • The image crate does not support multiplying and dividing by alpha channel.
Nearest Box Bilinear Bicubic Lanczos3
resize 12.36 39.11 73.57 140.10 216.32
fir rust 0.23 96.26 143.11 240.79 338.59
fir simd128 0.23 15.98 18.99 25.80 33.58

Resize L8 image (U8) 4928x3279 => 852x567

Pipeline:

src_image => resize => dst_image

  • Source image nasa-4928x3279.png has converted into grayscale image with one byte per pixel.
  • Numbers in the table mean a duration of image resizing in milliseconds.
Nearest Box Bilinear Bicubic Lanczos3
image 23.29 - 87.60 150.35 211.42
resize 7.79 17.22 27.25 50.98 74.74
fir rust 0.21 15.15 27.92 54.02 81.12
fir simd128 0.21 2.65 3.32 5.36 7.97

Resize LA8 image (U8x2) 4928x3279 => 852x567

Pipeline:

src_image => multiply by alpha => resize => divide by alpha => dst_image

  • Source image nasa-4928x3279-rgba.png has converted into grayscale image with an alpha channel (two bytes per pixel).
  • Numbers in the table mean a duration of image resizing in milliseconds.
  • The image crate does not support multiplying and dividing by alpha channel.
  • The resize crate does not support this pixel format.
Nearest Box Bilinear Bicubic Lanczos3
fir rust 0.19 49.46 74.31 124.11 175.58
fir simd128 0.19 8.02 9.41 12.85 17.58

Resize RGB16 image (U16x3) 4928x3279 => 852x567

Pipeline:

src_image => resize => dst_image

  • Source image nasa-4928x3279.png has converted into RGB16 image.
  • Numbers in the table mean a duration of image resizing in milliseconds.
Nearest Box Bilinear Bicubic Lanczos3
image 26.75 - 107.99 188.76 270.38
resize 11.39 30.97 53.58 106.09 157.82
fir rust 0.42 34.58 58.12 107.33 157.86
fir simd128 0.42 28.62 48.16 87.52 126.68

Resize RGBA16 image (U16x4) 4928x3279 => 852x567

Pipeline:

src_image => multiply by alpha => resize => divide by alpha => dst_image

  • Source image nasa-4928x3279-rgba.png
  • Numbers in the table mean a duration of image resizing in milliseconds.
  • The image crate does not support multiplying and dividing by alpha channel.
Nearest Box Bilinear Bicubic Lanczos3
resize 12.73 39.77 75.15 140.39 214.27
fir rust 0.39 89.75 123.03 185.52 250.31
fir simd128 0.39 46.65 70.80 121.69 170.89

Resize L16 image (U16) 4928x3279 => 852x567

Pipeline:

src_image => resize => dst_image

  • Source image nasa-4928x3279.png has converted into grayscale image with two bytes per pixel.
  • Numbers in the table mean a duration of image resizing in milliseconds.
Nearest Box Bilinear Bicubic Lanczos3
image 23.45 - 79.42 134.57 188.61
resize 8.33 16.79 26.60 50.54 73.93
fir rust 0.19 18.79 26.98 46.01 64.94
fir simd128 0.19 10.14 17.11 29.49 42.87

Resize LA16 (luma with alpha channel) image (U16x2) 4928x3279 => 852x567

Pipeline:

src_image => multiply by alpha => resize => divide by alpha => dst_image

  • Source image nasa-4928x3279-rgba.png has converted into grayscale image with an alpha channel (four bytes per pixel).
  • Numbers in the table mean a duration of image resizing in milliseconds.
  • The image crate does not support multiplying and dividing by alpha channel.
  • The resize crate does not support this pixel format.
Nearest Box Bilinear Bicubic Lanczos3
fir rust 0.25 44.15 59.50 91.27 125.41
fir simd128 0.25 26.02 38.49 65.75 92.37

Resize L32F image (F32) 4928x3279 => 852x567

Pipeline:

src_image => resize => dst_image

  • Source image nasa-4928x3279.png has converted into grayscale image with two bytes per pixel.
  • Numbers in the table mean a duration of image resizing in milliseconds.
Nearest Box Bilinear Bicubic Lanczos3
image 13.04 - 63.40 116.33 167.53
resize 7.31 15.27 22.17 42.93 65.69
fir rust 0.25 10.20 18.49 35.77 59.88

Note: The resize crate uses f32 for intermediate calculations. The fast_image_resize uses f64. This is a reason why fast_image_resize is slower or equal in cases with f32-based pixels.

Resize LA32F (luma with alpha channel) image (F32x2) 4928x3279 => 852x567

Pipeline:

src_image => multiply by alpha => resize => divide by alpha => dst_image

  • Source image nasa-4928x3279-rgba.png has converted into grayscale image with an alpha channel (two f32 values per pixel).
  • Numbers in the table mean a duration of image resizing in milliseconds.
  • The image crate does not support multiplying and dividing by alpha channel.
  • The resize crate does not support this pixel format.
Nearest Box Bilinear Bicubic Lanczos3
fir rust 0.41 30.13 42.49 69.34 98.15

Resize RGB32F image (F32x3) 4928x3279 => 852x567

Pipeline:

src_image => resize => dst_image

  • Source image nasa-4928x3279.png has converted into RGB32F image.
  • Numbers in the table mean a duration of image resizing in milliseconds.
Nearest Box Bilinear Bicubic Lanczos3
image 16.34 - 67.78 123.04 180.03
resize 10.39 21.49 35.88 65.69 95.80
fir rust 1.02 25.55 45.73 86.30 128.94

Resize RGBA32F image (F32x4) 4928x3279 => 852x567

Pipeline:

src_image => multiply by alpha => resize => divide by alpha => dst_image

  • Source image nasa-4928x3279-rgba.png
  • Numbers in the table mean a duration of image resizing in milliseconds.
  • The image crate does not support multiplying and dividing by alpha channel.
  • The resize crate does not support multiplying and dividing by alpha channel for this pixel format.
Nearest Box Bilinear Bicubic Lanczos3
fir rust 1.20 50.35 73.55 118.86 168.11