|
| 1 | +--- |
| 2 | +Title: '.getcolors()' |
| 3 | +Description: 'Returns colors and their frequencies in an image.' |
| 4 | +Subjects: |
| 5 | + - 'Computer Science' |
| 6 | + - 'Data Visualization' |
| 7 | +Tags: |
| 8 | + - 'Images' |
| 9 | + - 'Pillow' |
| 10 | + - 'Python' |
| 11 | +CatalogContent: |
| 12 | + - 'learn-python-3' |
| 13 | + - 'paths/computer-science' |
| 14 | +--- |
| 15 | + |
| 16 | +In the Pillow library, the **`.getcolors()`** method retrieves a list of colors present in an image, along with the count of how many times each color appears. This method is useful for tasks like analyzing image content, generating color palettes, or simplifying images by identifying dominant colors. |
| 17 | + |
| 18 | +## Syntax |
| 19 | + |
| 20 | +```pseudo |
| 21 | +Image.getcolors(maxcolors=256) |
| 22 | +``` |
| 23 | + |
| 24 | +**Parameters:** |
| 25 | + |
| 26 | +- `maxcolors` (int): The maximum number of unique colors to return. |
| 27 | + - If the number of colors in the image exceeds `maxcolors`, the method returns `None`. |
| 28 | + - If `None` is passed (or a sufficiently large number), it will attempt to return all colors. |
| 29 | + |
| 30 | +**Return value:** |
| 31 | + |
| 32 | +Returns a list of tuples. Each tuple is of the form `(count, color)`: |
| 33 | + |
| 34 | +- `count`: Number of pixels with that color. |
| 35 | +- `color`: The color value (e.g., RGB or grayscale). |
| 36 | + |
| 37 | +## Example |
| 38 | + |
| 39 | +The image to be used for this example is: |
| 40 | + |
| 41 | + |
| 42 | + |
| 43 | +In this example, the `.getcolors()` method returns a list of `(count, color)` tuples representing the number of times each color occurs in the image: |
| 44 | + |
| 45 | +```py |
| 46 | +from PIL import Image |
| 47 | + |
| 48 | +# Open the image |
| 49 | +image = Image.open("samandgos.jpg") |
| 50 | + |
| 51 | +# Convert the image to RGB |
| 52 | +image = image.convert("RGB") |
| 53 | + |
| 54 | +# Reduce the image to 256 colors |
| 55 | +image = image.quantize(colors=256) |
| 56 | + |
| 57 | +# Use the .getcolors() method |
| 58 | +colors = image.getcolors(maxcolors=256) |
| 59 | + |
| 60 | +if colors is None: |
| 61 | + print("Still too many colors") |
| 62 | +else: |
| 63 | + for count, color in colors: |
| 64 | + print(f"Color {color} occurs {count} times") |
| 65 | +``` |
| 66 | + |
| 67 | +The output lists each color in the simplified image along with the number of times it occurs. The output for this example will be: |
| 68 | + |
| 69 | +```shell |
| 70 | +Color 0 occurs 5351 times |
| 71 | +Color 1 occurs 2097 times |
| 72 | +Color 2 occurs 8281 times |
| 73 | +Color 3 occurs 4160 times |
| 74 | +Color 4 occurs 2251 times |
| 75 | +Color 5 occurs 9037 times |
| 76 | +Color 6 occurs 7575 times |
| 77 | +Color 7 occurs 4630 times |
| 78 | +Color 8 occurs 5681 times |
| 79 | +Color 9 occurs 4452 times |
| 80 | +Color 10 occurs 1004 times |
| 81 | +Color 11 occurs 3223 times |
| 82 | +Color 12 occurs 8721 times |
| 83 | +Color 13 occurs 4921 times |
| 84 | +Color 14 occurs 1966 times |
| 85 | +Color 15 occurs 7166 times |
| 86 | +Color 16 occurs 7571 times |
| 87 | +Color 17 occurs 6468 times |
| 88 | +Color 18 occurs 4326 times |
| 89 | +Color 19 occurs 4736 times |
| 90 | +Color 20 occurs 4187 times |
| 91 | +Color 21 occurs 6036 times |
| 92 | +Color 22 occurs 5684 times |
| 93 | +Color 23 occurs 5236 times |
| 94 | +Color 24 occurs 2330 times |
| 95 | +Color 25 occurs 6085 times |
| 96 | +Color 26 occurs 3656 times |
| 97 | +Color 27 occurs 5693 times |
| 98 | +Color 28 occurs 6344 times |
| 99 | +Color 29 occurs 2655 times |
| 100 | +Color 30 occurs 3257 times |
| 101 | +Color 31 occurs 3736 times |
| 102 | +Color 32 occurs 4065 times |
| 103 | +Color 33 occurs 7523 times |
| 104 | +Color 34 occurs 3035 times |
| 105 | +Color 35 occurs 6328 times |
| 106 | +Color 36 occurs 5641 times |
| 107 | +Color 37 occurs 5685 times |
| 108 | +Color 38 occurs 6326 times |
| 109 | +Color 39 occurs 6679 times |
| 110 | +Color 40 occurs 6636 times |
| 111 | +Color 41 occurs 7761 times |
| 112 | +Color 42 occurs 4872 times |
| 113 | +Color 43 occurs 5512 times |
| 114 | +Color 44 occurs 2918 times |
| 115 | +Color 45 occurs 1415 times |
| 116 | +Color 46 occurs 5392 times |
| 117 | +Color 47 occurs 6004 times |
| 118 | +Color 48 occurs 6780 times |
| 119 | +Color 49 occurs 2384 times |
| 120 | +Color 50 occurs 1511 times |
| 121 | +Color 51 occurs 4944 times |
| 122 | +Color 52 occurs 4678 times |
| 123 | +Color 53 occurs 6499 times |
| 124 | +Color 54 occurs 6695 times |
| 125 | +Color 55 occurs 4522 times |
| 126 | +Color 56 occurs 5444 times |
| 127 | +Color 57 occurs 4856 times |
| 128 | +Color 58 occurs 5478 times |
| 129 | +Color 59 occurs 6711 times |
| 130 | +Color 60 occurs 3428 times |
| 131 | +Color 61 occurs 4900 times |
| 132 | +Color 62 occurs 6881 times |
| 133 | +Color 63 occurs 3274 times |
| 134 | +Color 64 occurs 5509 times |
| 135 | +Color 65 occurs 5787 times |
| 136 | +Color 66 occurs 2966 times |
| 137 | +Color 67 occurs 4922 times |
| 138 | +Color 68 occurs 3112 times |
| 139 | +Color 69 occurs 2656 times |
| 140 | +Color 70 occurs 4266 times |
| 141 | +Color 71 occurs 3805 times |
| 142 | +Color 72 occurs 3642 times |
| 143 | +Color 73 occurs 2387 times |
| 144 | +Color 74 occurs 3697 times |
| 145 | +Color 75 occurs 5587 times |
| 146 | +Color 76 occurs 6387 times |
| 147 | +Color 77 occurs 5384 times |
| 148 | +Color 78 occurs 3397 times |
| 149 | +Color 79 occurs 5873 times |
| 150 | +Color 80 occurs 5233 times |
| 151 | +Color 81 occurs 4251 times |
| 152 | +Color 82 occurs 5992 times |
| 153 | +Color 83 occurs 4090 times |
| 154 | +Color 84 occurs 3494 times |
| 155 | +Color 85 occurs 4198 times |
| 156 | +Color 86 occurs 5352 times |
| 157 | +Color 87 occurs 4583 times |
| 158 | +Color 88 occurs 6856 times |
| 159 | +Color 89 occurs 2130 times |
| 160 | +Color 90 occurs 3103 times |
| 161 | +Color 91 occurs 5131 times |
| 162 | +Color 92 occurs 5134 times |
| 163 | +Color 93 occurs 4499 times |
| 164 | +Color 94 occurs 5915 times |
| 165 | +Color 95 occurs 6793 times |
| 166 | +Color 96 occurs 3934 times |
| 167 | +Color 97 occurs 7124 times |
| 168 | +Color 98 occurs 5011 times |
| 169 | +Color 99 occurs 6726 times |
| 170 | +Color 100 occurs 6869 times |
| 171 | +Color 101 occurs 7047 times |
| 172 | +Color 102 occurs 4238 times |
| 173 | +Color 103 occurs 5505 times |
| 174 | +Color 104 occurs 5404 times |
| 175 | +Color 105 occurs 3465 times |
| 176 | +Color 106 occurs 4124 times |
| 177 | +Color 107 occurs 4391 times |
| 178 | +Color 108 occurs 4349 times |
| 179 | +Color 109 occurs 4072 times |
| 180 | +Color 110 occurs 4062 times |
| 181 | +Color 111 occurs 4802 times |
| 182 | +Color 112 occurs 4841 times |
| 183 | +Color 113 occurs 6089 times |
| 184 | +Color 114 occurs 7084 times |
| 185 | +Color 115 occurs 1471 times |
| 186 | +Color 116 occurs 3802 times |
| 187 | +Color 117 occurs 4654 times |
| 188 | +Color 118 occurs 7700 times |
| 189 | +Color 119 occurs 1397 times |
| 190 | +Color 120 occurs 3759 times |
| 191 | +Color 121 occurs 2965 times |
| 192 | +Color 122 occurs 5437 times |
| 193 | +Color 123 occurs 2259 times |
| 194 | +Color 124 occurs 6166 times |
| 195 | +Color 125 occurs 5180 times |
| 196 | +Color 126 occurs 4777 times |
| 197 | +Color 127 occurs 5131 times |
| 198 | +Color 128 occurs 5566 times |
| 199 | +Color 129 occurs 4653 times |
| 200 | +Color 130 occurs 7840 times |
| 201 | +Color 131 occurs 4962 times |
| 202 | +Color 132 occurs 2570 times |
| 203 | +Color 133 occurs 1590 times |
| 204 | +Color 134 occurs 4376 times |
| 205 | +Color 135 occurs 3156 times |
| 206 | +Color 136 occurs 4364 times |
| 207 | +Color 137 occurs 3165 times |
| 208 | +Color 138 occurs 4866 times |
| 209 | +Color 139 occurs 5165 times |
| 210 | +Color 140 occurs 6053 times |
| 211 | +Color 141 occurs 3941 times |
| 212 | +Color 142 occurs 4895 times |
| 213 | +Color 143 occurs 2444 times |
| 214 | +Color 144 occurs 5314 times |
| 215 | +Color 145 occurs 5200 times |
| 216 | +Color 146 occurs 3863 times |
| 217 | +Color 147 occurs 5288 times |
| 218 | +Color 148 occurs 6256 times |
| 219 | +Color 149 occurs 7713 times |
| 220 | +Color 150 occurs 4387 times |
| 221 | +Color 151 occurs 6095 times |
| 222 | +Color 152 occurs 6858 times |
| 223 | +Color 153 occurs 3763 times |
| 224 | +Color 154 occurs 6492 times |
| 225 | +Color 155 occurs 3406 times |
| 226 | +Color 156 occurs 2824 times |
| 227 | +Color 157 occurs 4030 times |
| 228 | +Color 158 occurs 4426 times |
| 229 | +Color 159 occurs 4754 times |
| 230 | +Color 160 occurs 5036 times |
| 231 | +Color 161 occurs 6252 times |
| 232 | +Color 162 occurs 5088 times |
| 233 | +Color 163 occurs 4866 times |
| 234 | +Color 164 occurs 4744 times |
| 235 | +Color 165 occurs 5393 times |
| 236 | +Color 166 occurs 2679 times |
| 237 | +Color 167 occurs 5971 times |
| 238 | +Color 168 occurs 4345 times |
| 239 | +Color 169 occurs 2580 times |
| 240 | +Color 170 occurs 5619 times |
| 241 | +Color 171 occurs 3361 times |
| 242 | +Color 172 occurs 2991 times |
| 243 | +Color 173 occurs 5328 times |
| 244 | +Color 174 occurs 3382 times |
| 245 | +Color 175 occurs 6777 times |
| 246 | +Color 176 occurs 3731 times |
| 247 | +Color 177 occurs 4512 times |
| 248 | +Color 178 occurs 7768 times |
| 249 | +Color 179 occurs 2396 times |
| 250 | +Color 180 occurs 3988 times |
| 251 | +Color 181 occurs 5164 times |
| 252 | +Color 182 occurs 3219 times |
| 253 | +Color 183 occurs 7530 times |
| 254 | +Color 184 occurs 3541 times |
| 255 | +Color 185 occurs 4831 times |
| 256 | +Color 186 occurs 5813 times |
| 257 | +Color 187 occurs 4139 times |
| 258 | +Color 188 occurs 3720 times |
| 259 | +Color 189 occurs 7937 times |
| 260 | +Color 190 occurs 3594 times |
| 261 | +Color 191 occurs 5397 times |
| 262 | +Color 192 occurs 6046 times |
| 263 | +Color 193 occurs 5681 times |
| 264 | +Color 194 occurs 4991 times |
| 265 | +Color 195 occurs 5647 times |
| 266 | +Color 196 occurs 4275 times |
| 267 | +Color 197 occurs 4706 times |
| 268 | +Color 198 occurs 8018 times |
| 269 | +Color 199 occurs 5323 times |
| 270 | +Color 200 occurs 3471 times |
| 271 | +Color 201 occurs 3415 times |
| 272 | +Color 202 occurs 5235 times |
| 273 | +Color 203 occurs 5785 times |
| 274 | +Color 204 occurs 5801 times |
| 275 | +Color 205 occurs 2675 times |
| 276 | +Color 206 occurs 5914 times |
| 277 | +Color 207 occurs 3447 times |
| 278 | +Color 208 occurs 2012 times |
| 279 | +Color 209 occurs 5605 times |
| 280 | +Color 210 occurs 5324 times |
| 281 | +Color 211 occurs 5453 times |
| 282 | +Color 212 occurs 5658 times |
| 283 | +Color 213 occurs 3313 times |
| 284 | +Color 214 occurs 1382 times |
| 285 | +Color 215 occurs 4038 times |
| 286 | +Color 216 occurs 3344 times |
| 287 | +Color 217 occurs 6042 times |
| 288 | +Color 218 occurs 4893 times |
| 289 | +Color 219 occurs 4783 times |
| 290 | +Color 220 occurs 5210 times |
| 291 | +Color 221 occurs 7954 times |
| 292 | +Color 222 occurs 5376 times |
| 293 | +Color 223 occurs 5203 times |
| 294 | +Color 224 occurs 3249 times |
| 295 | +Color 225 occurs 4644 times |
| 296 | +Color 226 occurs 6352 times |
| 297 | +Color 227 occurs 5741 times |
| 298 | +Color 228 occurs 3665 times |
| 299 | +Color 229 occurs 4127 times |
| 300 | +Color 230 occurs 4011 times |
| 301 | +Color 231 occurs 6437 times |
| 302 | +Color 232 occurs 4812 times |
| 303 | +Color 233 occurs 3079 times |
| 304 | +Color 234 occurs 4886 times |
| 305 | +Color 235 occurs 3857 times |
| 306 | +Color 236 occurs 5840 times |
| 307 | +Color 237 occurs 4717 times |
| 308 | +Color 238 occurs 7219 times |
| 309 | +Color 239 occurs 6421 times |
| 310 | +Color 240 occurs 5862 times |
| 311 | +Color 241 occurs 3208 times |
| 312 | +Color 242 occurs 5490 times |
| 313 | +Color 243 occurs 4975 times |
| 314 | +Color 244 occurs 4550 times |
| 315 | +Color 245 occurs 5399 times |
| 316 | +Color 246 occurs 5703 times |
| 317 | +Color 247 occurs 5256 times |
| 318 | +Color 248 occurs 4182 times |
| 319 | +Color 249 occurs 5518 times |
| 320 | +Color 250 occurs 5247 times |
| 321 | +Color 251 occurs 4176 times |
| 322 | +Color 252 occurs 3356 times |
| 323 | +Color 253 occurs 5822 times |
| 324 | +Color 254 occurs 4965 times |
| 325 | +Color 255 occurs 4028 times |
| 326 | +``` |
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