{"id":2504,"date":"2023-07-21T23:43:23","date_gmt":"2023-07-21T23:43:23","guid":{"rendered":"https:\/\/statorials.org\/pl\/matplotlib-w-skali-szarosci\/"},"modified":"2023-07-21T23:43:23","modified_gmt":"2023-07-21T23:43:23","slug":"matplotlib-w-skali-szarosci","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/matplotlib-w-skali-szarosci\/","title":{"rendered":"Wy\u015bwietlanie obrazu w skali szaro\u015bci w matplotlib (z przyk\u0142adem)"},"content":{"rendered":"

<\/p>\n

\n

Mo\u017cesz u\u017cy\u0107 argumentu cmap<\/strong> w Matplotlib, aby \u0142atwo wy\u015bwietla\u0107 obrazy w skali szaro\u015bci<\/a> .<\/span><\/p>\n

Poni\u017cszy przyk\u0142ad pokazuje, jak zastosowa\u0107 ten argument w praktyce.<\/span><\/p>\n

Przyk\u0142ad: wy\u015bwietl obraz w skali szaro\u015bci w Matplotlib<\/strong><\/span><\/h3>\n

Za\u0142\u00f3\u017cmy, \u017ce mam nast\u0119puj\u0105cy obraz o nazwie Shape.JPG<\/strong> , kt\u00f3ry chcia\u0142bym wy\u015bwietli\u0107 w Matplotlib:<\/span> <\/p>\n

\"\"<\/p>\n

Aby wy\u015bwietli\u0107 ten obraz przy u\u017cyciu oryginalnych kolor\u00f3w, mog\u0119 u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni:<\/span> <\/p>\n

 import<\/span> numpy as<\/span> np\nimport<\/span> matplotlib. pyplot<\/span> as<\/span> plt\nfrom<\/span> PIL import<\/span> Image\n\nimage=Image. open<\/span> (' shapes.JPG<\/span> ')\nplt. imshow<\/span> (image)\nplt. show<\/span> ()\n<\/strong><\/pre>\n
\"\"<\/p>\n
 Zauwa\u017c, \u017ce ten obraz idealnie pasuje do obrazu, kt\u00f3ry mia\u0142em w moim pliku.<\/span><\/p>\n
 Aby wy\u015bwietli\u0107 obraz w skali szaro\u015bci, musz\u0119 u\u017cy\u0107 argumentu cmap=’gray’<\/strong> w nast\u0119puj\u0105cy spos\u00f3b:<\/span> <\/p>\n
 import<\/span> numpy as<\/span> np\nimport<\/span> matplotlib. pyplot<\/span> as<\/span> plt\nfrom<\/span> PIL import<\/span> Image\n\n#open image\n<\/span>image=Image. open<\/span> (' shapes.JPG<\/span> ')\n\n#convert image to black and white pixels<\/span>\ngray_image=image. convert<\/span> (' L<\/span> ')\n\n#convert image to NumPy array\n<\/span>gray_image_array=np. asarray<\/span> (gray_image)\n\n#display image on grayscale\n<\/span>plt. imshow<\/span> (gray_image_array, cmap=' gray<\/span> ')\nplt. show<\/span> ()\n<\/strong><\/pre>\n
\"Obraz<\/p>\n
 Obraz zosta\u0142 teraz przekonwertowany do skali szaro\u015bci.<\/span><\/p>\n
 Uwaga<\/strong> : Argument \u201eL\u201d konwertuje obraz na czarno-bia\u0142e piksele. Bez uprzedniego u\u017cycia tego wiersza kodu obraz nie b\u0119dzie wy\u015bwietlany w skali szaro\u015bci.<\/span><\/p>\n
 Dodatkowe zasoby<\/strong><\/span><\/h3>\n
 Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne typowe zadania w Matplotlib:<\/span><\/p>\n
 Jak wy\u015bwietli\u0107 linie siatki na wykresach Matplotlib<\/a>
 Jak rysowa\u0107 prostok\u0105ty w Matplotlib<\/a>
 Jak zwi\u0119kszy\u0107 rozmiar dzia\u0142ki w Matplotlib<\/a>
 Jak ustawi\u0107 znaczniki osi w Matplotlib<\/p>\n","protected":false},"excerpt":{"rendered":"
Mo\u017cesz u\u017cy\u0107 argumentu cmap w Matplotlib, aby \u0142atwo wy\u015bwietla\u0107 obrazy w skali szaro\u015bci . Poni\u017cszy przyk\u0142ad pokazuje, jak zastosowa\u0107 ten argument w praktyce. Przyk\u0142ad: wy\u015bwietl obraz w skali szaro\u015bci w Matplotlib Za\u0142\u00f3\u017cmy, \u017ce mam nast\u0119puj\u0105cy obraz o nazwie Shape.JPG , kt\u00f3ry chcia\u0142bym wy\u015bwietli\u0107 w Matplotlib: Aby wy\u015bwietli\u0107 ten obraz przy u\u017cyciu oryginalnych kolor\u00f3w, mog\u0119 u\u017cy\u0107 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-2504","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nWy\u015bwietlanie obrazu w skali szaro\u015bci w Matplotlib (z przyk\u0142adem) - Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak wy\u015bwietli\u0107 obraz w skali szaro\u015bci za pomoc\u0105 Matplotlib w j\u0119zyku Python, \u0142\u0105cznie z pe\u0142nym przyk\u0142adem.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/pl\/matplotlib-w-skali-szarosci\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Wy\u015bwietlanie obrazu w skali szaro\u015bci w Matplotlib (z przyk\u0142adem) - 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