mirror of https://github.com/opencv/opencv.git
tribta
8 years ago
parent
a6f5e1f0ca
commit
9ff33dacfc
5 changed files with 373 additions and 83 deletions
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/** |
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* @file CopyMakeBorder.java |
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* @brief Sample code that shows the functionality of copyMakeBorder |
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*/ |
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import org.opencv.core.*; |
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import org.opencv.highgui.HighGui; |
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import org.opencv.imgcodecs.Imgcodecs; |
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import java.util.Random; |
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class CopyMakeBorderRun { |
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public void run(String[] args) { |
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//! [variables]
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// Declare the variables
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Mat src, dst = new Mat(); |
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int top, bottom, left, right; |
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int borderType = Core.BORDER_CONSTANT; |
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String window_name = "copyMakeBorder Demo"; |
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Random rng; |
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//! [variables]
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//! [load]
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String imageName = ((args.length > 0) ? args[0] : "../data/lena.jpg"); |
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// Load an image
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src = Imgcodecs.imread(imageName, Imgcodecs.IMREAD_COLOR); |
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// Check if image is loaded fine
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if( src.empty() ) { |
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System.out.println("Error opening image!"); |
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System.out.println("Program Arguments: [image_name -- default ../data/lena.jpg] \n"); |
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System.exit(-1); |
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} |
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//! [load]
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// Brief how-to for this program
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System.out.println("\n" + |
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"\t copyMakeBorder Demo: \n" + |
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"\t -------------------- \n" + |
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" ** Press 'c' to set the border to a random constant value \n" + |
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" ** Press 'r' to set the border to be replicated \n" + |
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" ** Press 'ESC' to exit the program \n"); |
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//![create_window]
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HighGui.namedWindow( window_name, HighGui.WINDOW_AUTOSIZE ); |
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//![create_window]
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//! [init_arguments]
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// Initialize arguments for the filter
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top = (int) (0.05*src.rows()); bottom = top; |
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left = (int) (0.05*src.cols()); right = left; |
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//! [init_arguments]
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while( true ) { |
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//! [update_value]
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rng = new Random(); |
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Scalar value = new Scalar( rng.nextInt(256), |
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rng.nextInt(256), rng.nextInt(256) ); |
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//! [update_value]
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//! [copymakeborder]
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Core.copyMakeBorder( src, dst, top, bottom, left, right, borderType, value); |
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//! [copymakeborder]
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//! [display]
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HighGui.imshow( window_name, dst ); |
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//! [display]
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//![check_keypress]
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char c = (char) HighGui.waitKey(500); |
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c = Character.toLowerCase(c); |
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if( c == 27 ) |
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{ break; } |
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else if( c == 'c' ) |
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{ borderType = Core.BORDER_CONSTANT;} |
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else if( c == 'r' ) |
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{ borderType = Core.BORDER_REPLICATE;} |
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//![check_keypress]
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} |
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System.exit(0); |
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} |
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} |
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public class CopyMakeBorder { |
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public static void main(String[] args) { |
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// Load the native library.
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System.loadLibrary(Core.NATIVE_LIBRARY_NAME); |
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new CopyMakeBorderRun().run(args); |
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} |
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} |
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""" |
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@file copy_make_border.py |
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@brief Sample code that shows the functionality of copyMakeBorder |
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""" |
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import sys |
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from random import randint |
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import cv2 |
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def main(argv): |
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## [variables] |
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# First we declare the variables we are going to use |
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borderType = cv2.BORDER_CONSTANT |
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window_name = "copyMakeBorder Demo" |
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## [variables] |
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## [load] |
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imageName = argv[0] if len(argv) > 0 else "../data/lena.jpg" |
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# Loads an image |
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src = cv2.imread(imageName, cv2.IMREAD_COLOR) |
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# Check if image is loaded fine |
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if src is None: |
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print ('Error opening image!') |
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print ('Usage: copy_make_border.py [image_name -- default ../data/lena.jpg] \n') |
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return -1 |
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## [load] |
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# Brief how-to for this program |
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print ('\n' |
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'\t copyMakeBorder Demo: \n' |
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' -------------------- \n' |
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' ** Press \'c\' to set the border to a random constant value \n' |
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' ** Press \'r\' to set the border to be replicated \n' |
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' ** Press \'ESC\' to exit the program ') |
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## [create_window] |
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cv2.namedWindow(window_name, cv2.WINDOW_AUTOSIZE) |
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## [create_window] |
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## [init_arguments] |
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# Initialize arguments for the filter |
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top = int(0.05 * src.shape[0]) # shape[0] = rows |
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bottom = top |
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left = int(0.05 * src.shape[1]) # shape[1] = cols |
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right = left |
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## [init_arguments] |
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while 1: |
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## [update_value] |
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value = [randint(0, 255), randint(0, 255), randint(0, 255)] |
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## [update_value] |
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## [copymakeborder] |
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dst = cv2.copyMakeBorder(src, top, bottom, left, right, borderType, None, value) |
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## [copymakeborder] |
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## [display] |
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cv2.imshow(window_name, dst) |
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## [display] |
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## [check_keypress] |
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c = cv2.waitKey(500) |
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if c == 27: |
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break |
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elif c == 99: # 99 = ord('c') |
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borderType = cv2.BORDER_CONSTANT |
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elif c == 114: # 114 = ord('r') |
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borderType = cv2.BORDER_REPLICATE |
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## [check_keypress] |
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return 0 |
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if __name__ == "__main__": |
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main(sys.argv[1:]) |
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