fast_image_resize 3.0.3

Library for fast image resizing with using of SIMD instructions
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188

<!-- introduction start -->
## Benchmarks of fast_image_resize crate for arm64 architecture

Environment:

- CPU: Neoverse-N1 2GHz (Oracle Cloud Compute, VM.Standard.A1.Flex)
- Ubuntu 22.04 (linux 6.2.0)
- Rust 1.75.0
- criterion = "0.5.1"
- fast_image_resize = "3.0.0"


Other libraries used to compare of resizing speed:

- image = "0.24.7" (<https://crates.io/crates/image>)
- resize = "0.8.3" (<https://crates.io/crates/resize>)
- libvips = "8.12.1" (single-threaded mode, cache disabled)


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
<!-- introduction end -->

<!-- bench_compare_rgb start -->
### Resize RGB8 image (U8x3) 4928x3279 => 852x567

Pipeline:

`src_image => resize => dst_image`

- Source image [nasa-4928x3279.png](https://github.com/Cykooz/fast_image_resize/blob/main/data/nasa-4928x3279.png)
- Numbers in table is mean duration of image resizing in milliseconds.

|          | Nearest |  Box   | Bilinear | Bicubic | Lanczos3 |
|----------|:-------:|:------:|:--------:|:-------:|:--------:|
| image    |  84.23  |   -    |  158.27  | 300.25  |  424.18  |
| resize   |    -    | 54.79  |  101.83  | 214.95  |  312.68  |
| libvips  |  26.96  | 127.39 |  108.26  | 211.88  |  285.14  |
| fir rust |  0.90   | 21.34  |  33.56   |  79.22  |  101.92  |
| fir neon |  0.90   | 20.30  |  30.95   |  54.08  |  79.14   |
<!-- bench_compare_rgb end -->

<!-- bench_compare_rgba start -->
### Resize RGBA8 image (U8x4) 4928x3279 => 852x567

Pipeline:

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

- Source image
  [nasa-4928x3279-rgba.png](https://github.com/Cykooz/fast_image_resize/blob/main/data/nasa-4928x3279-rgba.png)
- Numbers in table is mean duration of image resizing in milliseconds.
- The `image` crate does not support multiplying and dividing by alpha channel.

|          | Nearest |  Box   | Bilinear | Bicubic | Lanczos3 |
|----------|:-------:|:------:|:--------:|:-------:|:--------:|
| resize   |    -    | 90.34  |  126.89  | 214.26  |  306.18  |
| libvips  |  36.27  | 236.63 |  362.93  | 706.31  |  959.75  |
| fir rust |  1.00   | 47.82  |  62.33   | 125.25  |  160.17  |
| fir neon |  1.00   | 38.19  |  52.98   |  81.18  |  113.44  |
<!-- bench_compare_rgba end -->

<!-- bench_compare_l start -->
### Resize L8 image (U8) 4928x3279 => 852x567

Pipeline:

`src_image => resize => dst_image`

- Source image [nasa-4928x3279.png](https://github.com/Cykooz/fast_image_resize/blob/main/data/nasa-4928x3279.png)
  has converted into grayscale image with one byte per pixel.
- Numbers in table is mean duration of image resizing in milliseconds.

|          | Nearest |  Box  | Bilinear | Bicubic | Lanczos3 |
|----------|:-------:|:-----:|:--------:|:-------:|:--------:|
| image    |  80.44  |   -   |  104.41  | 177.41  |  245.26  |
| resize   |    -    | 29.58 |  40.81   |  69.88  |  99.03   |
| libvips  |  12.42  | 50.65 |  39.70   |  71.96  |  96.63   |
| fir rust |  0.49   | 8.89  |  12.50   |  18.65  |  28.38   |
| fir neon |  0.49   | 6.65  |  10.48   |  17.71  |  26.15   |
<!-- bench_compare_l end -->

<!-- bench_compare_la start -->
### Resize LA8 image (U8x2) 4928x3279 => 852x567

Pipeline:

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

- Source image
  [nasa-4928x3279-rgba.png](https://github.com/Cykooz/fast_image_resize/blob/main/data/nasa-4928x3279-rgba.png)
  has converted into grayscale image with alpha channel (two bytes per pixel).
- Numbers in table is mean 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 |
|----------|:-------:|:------:|:--------:|:-------:|:--------:|
| libvips  |  19.61  | 146.02 |  227.87  | 406.12  |  552.30  |
| fir rust |  0.68   | 21.96  |  30.28   |  49.89  |  57.94   |
| fir neon |  0.68   | 19.20  |  25.86   |  38.59  |  54.96   |
<!-- bench_compare_la end -->

<!-- bench_compare_rgb16 start -->
### Resize RGB16 image (U16x3) 4928x3279 => 852x567

Pipeline:

`src_image => resize => dst_image`

- Source image [nasa-4928x3279.png](https://github.com/Cykooz/fast_image_resize/blob/main/data/nasa-4928x3279.png)
  has converted into RGB16 image.
- Numbers in table is mean duration of image resizing in milliseconds.

|          | Nearest |  Box   | Bilinear | Bicubic | Lanczos3 |
|----------|:-------:|:------:|:--------:|:-------:|:--------:|
| image    |  85.49  |   -    |  158.64  | 325.95  |  476.04  |
| resize   |    -    | 59.51  |  109.85  | 221.47  |  331.32  |
| libvips  |  27.84  | 142.44 |  118.54  | 244.13  |  315.47  |
| fir rust |  1.46   | 54.02  |  76.02   | 133.93  |  165.37  |
| fir neon |  1.46   | 63.23  |  71.72   |  90.48  |  127.29  |
<!-- bench_compare_rgb16 end -->

<!-- bench_compare_rgba16 start -->
### Resize RGBA16 image (U16x4) 4928x3279 => 852x567

Pipeline:

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

- Source image
  [nasa-4928x3279-rgba.png](https://github.com/Cykooz/fast_image_resize/blob/main/data/nasa-4928x3279-rgba.png)
- Numbers in table is mean duration of image resizing in milliseconds.
- The `image` crate does not support multiplying and dividing by alpha channel.

|          | Nearest |  Box   | Bilinear | Bicubic | Lanczos3 |
|----------|:-------:|:------:|:--------:|:-------:|:--------:|
| resize   |    -    | 87.97  |  148.55  | 281.23  |  396.41  |
| libvips  |  38.35  | 247.96 |  373.37  | 739.72  | 1010.18  |
| fir rust |  1.58   | 76.35  |  108.01  | 185.41  |  245.74  |
| fir neon |  1.58   | 58.50  |  78.71   | 118.26  |  160.98  |
<!-- bench_compare_rgba16 end -->

<!-- bench_compare_l16 start -->
### Resize L16 image (U16) 4928x3279 => 852x567

Pipeline:

`src_image => resize => dst_image`

- Source image [nasa-4928x3279.png](https://github.com/Cykooz/fast_image_resize/blob/main/data/nasa-4928x3279.png)
  has converted into grayscale image with two bytes per pixel.
- Numbers in table is mean duration of image resizing in milliseconds.

|          | Nearest |  Box  | Bilinear | Bicubic | Lanczos3 |
|----------|:-------:|:-----:|:--------:|:-------:|:--------:|
| image    |  80.61  |   -   |  110.48  | 186.24  |  257.99  |
| resize   |    -    | 28.96 |  45.77   |  82.03  |  99.50   |
| libvips  |  12.46  | 54.61 |  43.46   |  82.52  |  106.08  |
| fir rust |  0.66   | 26.66 |  36.91   |  54.87  |  77.55   |
| fir neon |  0.66   | 13.21 |  17.64   |  26.98  |  37.92   |
<!-- bench_compare_l16 end -->

<!-- bench_compare_la16 start -->
### 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](https://github.com/Cykooz/fast_image_resize/blob/main/data/nasa-4928x3279-rgba.png)
  has converted into grayscale image with alpha channel (four bytes per pixel).
- Numbers in table is mean 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 |
|----------|:-------:|:------:|:--------:|:-------:|:--------:|
| libvips  |  21.68  | 152.92 |  242.95  | 430.93  |  587.43  |
| fir rust |  1.02   | 44.28  |  60.84   |  97.75  |  131.67  |
| fir neon |  1.02   | 27.06  |  35.12   |  53.16  |  72.03   |
<!-- bench_compare_la16 end -->