{"id":3275,"date":"2021-07-23T08:46:28","date_gmt":"2021-07-23T08:46:28","guid":{"rendered":"https:\/\/www.bearloga.space\/?page_id=3275"},"modified":"2021-07-23T08:46:28","modified_gmt":"2021-07-23T08:46:28","slug":"opencv-czvetnye-izobrazheniya-v-grayscale","status":"publish","type":"page","link":"https:\/\/www.bearloga.space\/en\/opencv-czvetnye-izobrazheniya-v-grayscale\/","title":{"rendered":"OpenCV \u2014 \u0426\u0432\u0435\u0442\u043d\u044b\u0435 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0432 GrayScale"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u0412 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0438\u0445 \u0433\u043b\u0430\u0432\u0430\u0445 \u043c\u044b \u043e\u0431\u0441\u0443\u0436\u0434\u0430\u043b\u0438, \u043a\u0430\u043a \u0447\u0438\u0442\u0430\u0442\u044c \u0432\u0445\u043e\u0434\u043d\u043e\u0435 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u0432 \u0432\u0438\u0434\u0435 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0442\u0438\u043f\u043e\u0432 (\u0434\u0432\u043e\u0438\u0447\u043d\u044b\u0439 \u0444\u0430\u0439\u043b, \u043e\u0442\u0442\u0435\u043d\u043a\u0438 \u0441\u0435\u0440\u043e\u0433\u043e, BGR \u0438 \u0442. \u0414.).&nbsp;\u0412 \u044d\u0442\u043e\u0439 \u0433\u043b\u0430\u0432\u0435 \u043c\u044b \u0443\u0437\u043d\u0430\u0435\u043c, \u043a\u0430\u043a \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u0442\u044c \u043e\u0434\u0438\u043d \u0442\u0438\u043f \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0432 \u0434\u0440\u0443\u0433\u043e\u0439.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041a\u043b\u0430\u0441\u0441 \u0441 \u0438\u043c\u0435\u043d\u0435\u043c&nbsp;<strong>Imgproc<\/strong>&nbsp;\u043f\u0430\u043a\u0435\u0442\u0430&nbsp;<strong>org.opencv.imgproc<\/strong>&nbsp;\u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043c\u0435\u0442\u043e\u0434\u044b \u0434\u043b\u044f \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0438\u0437 \u043e\u0434\u043d\u043e\u0433\u043e \u0446\u0432\u0435\u0442\u0430 \u0432 \u0434\u0440\u0443\u0433\u043e\u0439.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u041f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0446\u0432\u0435\u0442\u043d\u044b\u0445 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u0432 \u043e\u0442\u0442\u0435\u043d\u043a\u0438 \u0441\u0435\u0440\u043e\u0433\u043e<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u041c\u0435\u0442\u043e\u0434 \u0441 \u0438\u043c\u0435\u043d\u0435\u043c&nbsp;<strong>cvtColor ()<\/strong>&nbsp;\u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0446\u0432\u0435\u0442\u043d\u044b\u0445 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u0432 \u043e\u0442\u0442\u0435\u043d\u043a\u0438 \u0441\u0435\u0440\u043e\u0433\u043e.&nbsp;\u041d\u0438\u0436\u0435 \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442\u0441\u044f \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441 \u044d\u0442\u043e\u0433\u043e \u043c\u0435\u0442\u043e\u0434\u0430.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">cvtColor(Mat src, Mat dst, int code)\n<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u042d\u0442\u043e\u0442 \u043c\u0435\u0442\u043e\u0434 \u043f\u0440\u0438\u043d\u0438\u043c\u0430\u0435\u0442 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u2014<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>src<\/strong>&nbsp;\u2014 \u043c\u0430\u0442\u0440\u0438\u0446\u0430, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a.<\/li><li><strong>dst<\/strong>&nbsp;\u2014 \u043c\u0430\u0442\u0440\u0438\u0446\u0430, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u0443\u043d\u043a\u0442 \u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f.<\/li><li><strong>code<\/strong>&nbsp;\u2014 \u0426\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u044b\u0439 \u043a\u043e\u0434, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0439 \u0442\u0438\u043f \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, RGB \u0432 \u043e\u0442\u0442\u0435\u043d\u043a\u0438 \u0441\u0435\u0440\u043e\u0433\u043e.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>src<\/strong>\u00a0\u2014 \u043c\u0430\u0442\u0440\u0438\u0446\u0430, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>dst<\/strong>&nbsp;\u2014 \u043c\u0430\u0442\u0440\u0438\u0446\u0430, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u0443\u043d\u043a\u0442 \u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>code<\/strong>&nbsp;\u2014 \u0426\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u044b\u0439 \u043a\u043e\u0434, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0439 \u0442\u0438\u043f \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, RGB \u0432 \u043e\u0442\u0442\u0435\u043d\u043a\u0438 \u0441\u0435\u0440\u043e\u0433\u043e.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0426\u0432\u0435\u0442\u043d\u044b\u0435 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043c\u043e\u0436\u043d\u043e \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u0442\u044c \u0432&nbsp;<strong>\u043e\u0442\u0442\u0435\u043d\u043a\u0438<\/strong>&nbsp;\u0441\u0435\u0440\u043e\u0433\u043e, \u043f\u0435\u0440\u0435\u0434\u0430\u0432 \u043a\u043e\u0434&nbsp;<strong>Imgproc.COLOR_RGB2GRAY<\/strong>&nbsp;\u0432\u043c\u0435\u0441\u0442\u0435 \u0441 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u0439 \u0438 \u0446\u0435\u043b\u0435\u0432\u043e\u0439 \u043c\u0430\u0442\u0440\u0438\u0446\u0430\u043c\u0438 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430 \u0434\u043b\u044f&nbsp;<strong>\u043c\u0435\u0442\u043e\u0434\u0430 cvtColor ()<\/strong>&nbsp;.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u043f\u0440\u0438\u043c\u0435\u0440<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u043b\u0435\u0434\u0443\u044e\u0449\u0430\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430 \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u0443\u0435\u0442, \u043a\u0430\u043a \u0447\u0438\u0442\u0430\u0442\u044c \u0446\u0432\u0435\u0442\u043d\u043e\u0435 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u043a\u0430\u043a \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u0432 \u0433\u0440\u0430\u0434\u0430\u0446\u0438\u044f\u0445 \u0441\u0435\u0440\u043e\u0433\u043e \u0438 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u0442\u044c \u0435\u0433\u043e \u0432 \u043e\u043a\u043d\u0435 JavaFX.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">import java.awt.image.BufferedImage;\n  \nimport org.opencv.core.Core;\nimport org.opencv.core.Mat;\nimport org.opencv.imgcodecs.Imgcodecs;\nimport org.opencv.imgproc.Imgproc;\n\nimport javafx.application.Application;\nimport javafx.embed.swing.SwingFXUtils;\nimport javafx.scene.Group;\nimport javafx.scene.Scene;\nimport javafx.scene.image.ImageView;\nimport javafx.scene.image.WritableImage;\n\nimport javafx.stage.Stage;\n\npublic class ColorToGrayscale extends Application {\n   @Override\n   public void start(Stage stage) throws Exception {\n      WritableImage writableImage = loadAndConvert();\n       \n      \/\/ Setting the image view\n      ImageView imageView = new ImageView(writableImage);\n\n      \/\/ Setting the position of the image\n      imageView.setX(10);\n      imageView.setY(10);\n\n      \/\/ setting the fit height and width of the image view\n      imageView.setFitHeight(400);\n      imageView.setFitWidth(600);\n\n      \/\/ Setting the preserve ratio of the image view\n      imageView.setPreserveRatio(true);\n\n      \/\/ Creating a Group object\n      Group root = new Group(imageView);\n\n      \/\/ Creating a scene object\n      Scene scene = new Scene(root, 600, 400);\n\n      \/\/ Setting title to the Stage\n      stage.setTitle(\"Colored to grayscale image\");\n\n      \/\/ Adding scene to the stage\n      stage.setScene(scene);\n\n      \/\/ Displaying the contents of the stage\n      stage.show();\n   } \n   public WritableImage loadAndConvert() throws Exception {\n      \/\/Loading the OpenCV core library\n      System.loadLibrary( Core.NATIVE_LIBRARY_NAME );\n\n      String input = \"C:\/EXAMPLES\/OpenCV\/sample.jpg\";\n\n      \/\/Reading the image\n      Mat src = Imgcodecs.imread(input);\n\n      \/\/Creating the empty destination matrix\n      Mat dst = new Mat();\n\n      \/\/Converting the image to gray sacle and saving it in the dst matrix\n      Imgproc.cvtColor(src, dst, Imgproc.COLOR_RGB2GRAY);\n      \n      \/\/Extracting data from the transformed image (dst)\n      byte[] data1 = new byte[dst.rows() * dst.cols() * (int)(dst.elemSize())];\n      dst.get(0, 0, data1);\n\n      \/\/Creating Buffered image using the data\n      BufferedImage bufImage = new BufferedImage(dst.cols(),dst.rows(), \n         BufferedImage.TYPE_BYTE_GRAY);\n\n      \/\/Setting the data elements to the image\n      bufImage.getRaster().setDataElements(0, 0, dst.cols(), dst.rows(), data1);\n\n      \/\/Creating a WritableImage\n      WritableImage writableImage = SwingFXUtils.toFXImage(bufImage, null);\n      System.out.println(\"Converted to Grayscale\");\n      return writableImage;\n   }\n   public static void main(String args[]) throws Exception {\n      launch(args);\n   }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u0412\u0445\u043e\u0434\u043d\u043e\u0435 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0435<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0435\u0434\u043f\u043e\u043b\u043e\u0436\u0438\u043c, \u0447\u0442\u043e \u043d\u0438\u0436\u0435 \u0443\u043a\u0430\u0437\u0430\u043d\u043e \u0432\u0445\u043e\u0434\u043d\u043e\u0435 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0435&nbsp;<strong>sample.jpg,<\/strong>&nbsp;\u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0435 \u0432 \u0432\u044b\u0448\u0435\u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0439 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0435.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/coderlessons.com\/wp-content\/uploads\/2019\/07\/sample_image-3.jpg\" alt=\"\u041e\u0431\u0440\u0430\u0437\u0435\u0446 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0438\u0445 \u0433\u043b\u0430\u0432\u0430\u0445 \u043c\u044b \u043e\u0431\u0441\u0443\u0436\u0434\u0430\u043b\u0438, \u043a\u0430\u043a \u0447\u0438\u0442\u0430\u0442\u044c \u0432\u0445\u043e\u0434\u043d\u043e\u0435 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u0432 \u0432\u0438\u0434\u0435 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0442\u0438\u043f\u043e\u0432 (\u0434\u0432\u043e\u0438\u0447\u043d\u044b\u0439 \u0444\u0430\u0439\u043b, \u043e\u0442\u0442\u0435\u043d\u043a\u0438 \u0441\u0435\u0440\u043e\u0433\u043e, BGR \u0438 \u0442. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[108],"tags":[],"class_list":["post-3275","page","type-page","status-publish","hentry","category-opencv"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages\/3275","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/comments?post=3275"}],"version-history":[{"count":0,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages\/3275\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/media?parent=3275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/categories?post=3275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/tags?post=3275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}