Learn more about imshow, drawnow Make imshow more efficent. If you want all the images that you display using imshow to appear without the gray border, set the Image Processing Toolbox 'ImshowBorder' preference to 'tight'. MATLAB: How to remove white border from image Computer Vision Toolbox image Image Processing Toolbox % This draws a small transparent white square in upper left hand side of the group image. Avez vous une idée de comment réduire ces "marges" entre les images? You can change this default and suppress the border using the 'border' parameter. Choose a web site to get translated content where available and see local events and offers. Merci d'avance. in. Based on your location, we recommend that you select: . 28/11/2009, 10h54. The ONLY drawback of the code that may fail is that the foreground cannot contain pixel value that is exactly 204 where in my case, it is acceptable. I am trying to group a few images together and I really would like to remove the border, but I keep receiving an error message because I don't have enough input arguments. I believe these are your options: Change the size of the figure that you are drawing. https://www.mathworks.com/matlabcentral/answers/181390-matlab-imshow-function-border-tight-not-working-under-small-size-image#answer_170071, https://www.mathworks.com/matlabcentral/answers/181390-matlab-imshow-function-border-tight-not-working-under-small-size-image#comment_658412, https://www.mathworks.com/matlabcentral/answers/181390-matlab-imshow-function-border-tight-not-working-under-small-size-image#comment_658435. MATLAB dispose d’un système d’affichage d’images puissant et flexible qui vous permet d’utiliser les commandes imshow et plot pour afficher des images complexes et enregistrer le résultat. Die einfache Antwort auf Ihre Frage geben Bessi und Mr. Fooz: Setzen Sie die Einstellung 'Sichtbar' für die Figur auf 'Aus'.Obwohl es sehr einfach ist, Befehle wie IMSHOW und PRINT zu verwenden, um Zahlen zu generieren, IMSHOW ich zusammen, warum ich denke, dass es nicht unbedingt die beste Option ist: . I ask, because I want to plot two sets of correlation data and put them next to each other as an upper and lower triangle. It still leaves the white space around the border however. If limits is a 2-element vector [low, high], the image is shown using a display range between low and high. Parameters: pad float, default: 1.08. Parameters: pad float, default: 1.08. imshow ('moon.tif','Border','tight') The following figure shows the same image displayed with and without a border. E.g. The 'border' parameters affect only the image being displayed in the call to imshow. Sobald die Rechtecke auf dem Bild gezeichnet sind, möchte ich die Änderungen speichern. By default, when imshow displays an image in a figure, it surrounds the image with a gray border. There are two options: Constant value border: Applies a padding of a constant value for the whole border. I carefully read the doc and found the sentence below When set to ‘tight', the figure window does not include any space around the image in the figure. But, I recently found that border tight will stop working when the matrix is smaller than approximately 125-130 thresholding, Please try these two Matlab command and you will see the difference. outputimg = inputimg(x:x+size-1,y:y+size-1,:); Observing that the grays region (border) pixel intensity is always 204, basically, it detects the first element position that is not equal to 204, that will be the upper left point of the square. im = imread ('image.tif'); f = figure, imshow (im, 'Border', 'tight'); rectangle ('Position', [100, 100, 10, 10]); print (f, '-r80', '-dtiff', 'image2.tif'); Utiliser le code ci-dessus, modifiez le -r paramètre jusqu'à ce qu'il regarde, à droite, et voilà!! By default, when imshow displays an image in a figure, it surrounds the image with a gray border. The imshow () function does have a property to remove the border around a displayed image, by using imshow (I, 'border', 'tight'). Then, since we know the square size of efficient region, we can finally crop the matrix to remove all the border. imshow(-1 * squeeze(Pol1ChanACard1Avg),[], 'Parent' ,imagePlot1, 'border' , 'tight' ); 解決済み. I carefully read the doc and found the sentence below When set to ‘tight', the figure window does not include any space around the image in the figure. Learn more about image Image Processing Toolbox, Computer Vision Toolbox By default, when imshow displays an image in a figure, it surrounds the image with a gray border. imshow(XZ,[], 'Border', 'tight'); You can perform the segmentation in the Image Segmenter app. Is there anyway to make it faster? If the image is very small or if the figure contains other objects besides an image and its axes, imshow might use a border regardless of how this parameter is set. It can also let you set the colorbar once before the loop and not need to reissue it at every iteration. By continuing to use this website, you consent to our use of cookies. Please see our. These control the extra padding around the figure border and between subplots. Choose a web site to get translated content where available and see local events and offers. berak is right. Ich bin mit Matlab 7.9 und imshow ist Teil der Image Processing Toolbox. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. subplottight(2,4,8), imshow('001.jpg', 'border', 'tight'); Doing this way I am renaming the files like "001", "002" (I dont know how to handle the orig. If the image is very small or if the figure contains other objects besides an image and its axes, imshow might use a border regardless of how this parameter is set. An example would be lovely. What I am trying to do is to capture image after imshow and store it to the matrix using command like, I just solved the problem by writing the function below, %Find upper left element of the foreground. I also tried to count border size in each side, but found the size is not balanced for some reason, not sure why. img = imread ('cameraman.tif'); fh = figure; imshow (img, 'border', 'tight'); %//show your image hold on; rectangle ('Position', [50 70 30 60]); %//draw rectangle on image frm = getframe (fh); %//get the image+rectangle imwrite (frm.cdata, 'savedFileName.png'); %//save to file. I know this is a little odd, but can you provide an example of how to use your function? The 'border' parameters affect only the image being displayed in the call to imshow. I am not sure what that means. Find the treasures in MATLAB Central and discover how the community can help you! Accelerating the pace of engineering and science. By default, when imshow displays an image in a figure, it surrounds the image with a gray border. : imshow (im): imshow (im, limits): imshow (im, map): imshow (rgb, …): imshow (filename): imshow (…, string_param1, value1, …): h = imshow (…) Display the image im, where im can be a 2-dimensional (grayscale image) or a 3-dimensional (RGB image) matrix.. You can change this default and suppress the border using the 'border' parameter. I guess what I don't understand is why imshow() ... Only if the black y axis lines moved inwards to be tight against the image boundary. You can change this default and suppress the border using the 'border' parameter. The 'border' parameters affect only the image being displayed in the call to imshow. Unable to complete the action because of changes made to the page. But using plot/rectangle/imshow is so easy, so I'm hoping there is a command that can let me call plot, imshow etc, not display the results and then save what would have been displayed. Syntax: cv2.copyMakeBorder(src, top, bottom, left, right, borderType, value) Parameters: src: It is the source image. The pads are specified in fraction of fontsize. Tight Layout guide ¶ How to use tight-layout to fit plots within your figure cleanly. fig, ((ax1, ax2), (ax3, ax4)) = plt. Cette question commence en quelque sorte là où cette question se termine. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. OpenCV-Python is a library of Python bindings designed to solve computer vision problems.cv2.copyMakeBorder() method is used to create a border around the image like a photo frame. This will be seen more clearly in the Code section. Pour la couleur, j'ai supposé que vous vouliez utiliser la valeur de gris moyenne de l'arrière-plan, que j'ai calculée à partir de la valeur moyenne des deux lignes inférieures de votre image. Voir rectanlge pour plus d'options sur le dessin des rectangles. I also tried to count border size in each side, but found the size is not balanced for some reason, not sure why. h_pad, w_pad float, default: pad. Find the treasures in MATLAB Central and discover how the community can help you! To start the segmentation process, click Threshold to open the lung slice in the Threshold tab. Padding between the figure edge and the edges of subplots, as a fraction of the font size. This MATLAB function displays the grayscale image I in a figure. You can also use … To start the segmentation process, click Threshold to open the lung slice in the Threshold tab. Matlab imshow function border tight not working under small size image. Find the sum of all the numbers of the input vector Find the sum of all the numbers of the input vector x. Pastebin is a website where you can store text online for a set period of time. You may receive emails, depending on your. imshow border tight for subplot. You may receive emails, depending on your. When set to 'tight', the figure window does not include any space around the image in the figure. But, I recently found that border tight will stop working when the matrix is smaller than approximately 125-130 thresholding Anyone know any quick solutions for … Learn more about imshow, drawnow matplotlib.pyplot.imshow¶ matplotlib.pyplot.imshow (X, cmap = None, norm = None, aspect = None, interpolation = None, alpha = None, vmin = None, vmax = None, origin = None, extent = None, *, filternorm = True, filterrad = 4.0, resample = None, url = None, data = None, ** kwargs) [source] ¶ Display data as an image, i.e., on a 2D regular raster. Le code suivant ajoute une bordure constante de la taille de 10 pixels à quatre côtés de l'image d'origine. outputimg = inputimg(x:x+size-1,y:y+size-1,:); Observing that the grays region (border) pixel intensity is always 204, basically, it detects the first element position that is not equal to 204, that will be the upper left point of the square. subplottight(2,4,8), imshow('001.jpg', 'border', 'tight'); Doing this way I am renaming the files like "001", "002" (I dont know how to handle the orig. Based on your location, we recommend that you select: . 2. imshow (img, 'InitialMag', 100, 'Border', 'tight'), hold on. Cela sonne comme une bonne solution; juste 2 petites questions. Reload the page to see its updated state. We can then draw a dark border around each triangle independently, to separate out the two triangles and show they are different metrics. (unless I've misunderstood you). top: It is the border width in number of pixels in top direction. Ich glaube, das ist nicht eine Antwort, es sollte eine edit @Amro ’s Antwort. But the imshow/drawnow combo is to slow processing wise, and it takes too long so my data acquisition cards memory gets filled, and errors out. Q&A for Work. How to remove white border from image?. Is there anyway to make it faster? Then, since we know the square size of efficient region, we can finally crop the matrix to remove all the border. Adding bbox_inches='tight' to the savefig command almost gets you there, you can see in the example below that the white space left is much smaller, but still present. The imshow() function in pyplot module of matplotlib library is used to display data as an image; i.e. on a 2D regular raster.. Syntax: matplotlib.pyplot.imshow(X, cmap=None, norm=None, aspect=None, interpolation=None, alpha=None, vmin=None, vmax=None, origin=None, extent=None, shape=, filternorm=1, filterrad=4.0, imlim=, resample=None, url=None, \*, data=None, \*\*kwargs) These control the extra padding around the figure border and between subplots. That is very disappointing. Open the app from the MATLAB Apps toolstrip or use the imageSegmenter command, specifying a 2-D slice as an argument, imageSegmenter(XY). der rahmen oben und unten ist dann weg, aber rechts und links bleibt ein weißer rahmen. die originaldatei ist vom … imshow('pout.tif', 'parent',h(2)); Note, the images will not be tight in both dimensions unless the figure is turned into the correct shape manually and all images are the same shape. imshow(-1 * squeeze(Pol1ChanACard1Avg),[], 'Parent' ,imagePlot1, 'border' , 'tight' ); Padding between the figure edge and the edges of subplots, as a fraction of the font size. Teams. Amro Antwort für mich gearbeitet, aber ich hatte zu tun, einige änderungen. Open the app from the MATLAB Apps toolstrip or use the imageSegmenter command, specifying a 2-D slice as an argument, imageSegmenter(XY). Reload the page to see its updated state. I am trying to group a few images together and I really would like to remove the border, but I keep receiving an error message because I don't have enough input arguments. What does this program do? But, I recently found that border tight will stop working when the matrix is smaller than approximately 125-130 thresholding, Please try these two Matlab command and you will see the difference. This MATLAB function displays the grayscale image I in a figure. Vielen Dank im Voraus! I know I could start directly writing to an image and then saving the result. Jerome Briot . Matplotlib imshow border. namedWindow/imshow are basic functions, they are not intended to create a nice GUI. Pastebin.com is the number one paste tool since 2002. If the image is very small or if the figure contains other objects besides an image and its axes, imshow might use a border regardless of how this parameter is set. Unable to complete the action because of changes made to the page. That is very disappointing. You can change this default and suppress the border using the 'border' parameter. imshow (I, 'InitialMag', 100, 'Border', 'tight'), hold on. Ultrasound cine frames and their times could be captured and used for the custom application. I know this is a little odd, but can you provide an example of how to use your function? Code: doc montage. ich habe das gerade mit imshow(X, 'border', 'tight') versucht. https://de.mathworks.com/matlabcentral/answers/181390-matlab-imshow-function-border-tight-not-working-under-small-size-image#answer_170071, https://de.mathworks.com/matlabcentral/answers/181390-matlab-imshow-function-border-tight-not-working-under-small-size-image#comment_658412, https://de.mathworks.com/matlabcentral/answers/181390-matlab-imshow-function-border-tight-not-working-under-small-size-image#comment_658435.