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demos: add demo for crop operations
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‎demos/shape/demoCrop.m

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% Demonstration of image crop functions
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%
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% output = demoCrop(input)
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%
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% Example
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% demoCrop
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%
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% See also
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%
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% ------
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% Author: David Legland
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% e-mail: [email protected]
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% INRAE - BIA Research Unit - BIBS Platform (Nantes)
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% Created: 2022-06-24, using Matlab 9.12.0.1884302 (R2022a)
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% Copyright 2022 INRAE.
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%% Input data
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% read sample image
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% (provided within the @image/sampleFiles directory)
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img = Image.read('wheatGrainSlice.tif');
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figure; show(img);
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%% Boxes
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% need to segment image to obtain the region of the grain
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seg = img > 160;
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seg2 = areaOpening(killBorders(seg), 10);
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% compute boxes
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box = regionBoundingBox(seg2);
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obox = regionOrientedBox(seg2);
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% display boxes over image
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% (requires MatGeom toolbox)
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hold on;
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drawBox(box, 'color', 'g', 'linewidth', 2);
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drawOrientedBox(obox, 'color', 'm', 'linewidth', 2);
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%% Crop
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resCrop = crop(img, box);
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figure; show(resCrop)
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title('Crop Box');
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write(resCrop, 'wheatGrainCrop.tif');
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resCrop2 = cropOrientedBox(img, obox);
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figure; show(resCrop2)
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title('Crop Oriented Box');
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write(resCrop, 'wheatGrainCropOriented.tif');
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‎demos/shape/html/demoCrop.html

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<!DOCTYPE html
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PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<!--
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This HTML was auto-generated from MATLAB code.
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To make changes, update the MATLAB code and republish this document.
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--><title>demoCrop</title><meta name="generator" content="MATLAB 9.12"><link rel="schema.DC" href="http://purl.org/dc/elements/1.1/"><meta name="DC.date" content="2022-06-24"><meta name="DC.source" content="demoCrop.m"><style type="text/css">
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html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,font,img,ins,kbd,q,s,samp,small,strike,strong,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td{margin:0;padding:0;border:0;outline:0;font-size:100%;vertical-align:baseline;background:transparent}body{line-height:1}ol,ul{list-style:none}blockquote,q{quotes:none}blockquote:before,blockquote:after,q:before,q:after{content:'';content:none}:focus{outine:0}ins{text-decoration:none}del{text-decoration:line-through}table{border-collapse:collapse;border-spacing:0}
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html { min-height:100%; margin-bottom:1px; }
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html body { height:100%; margin:0px; font-family:Arial, Helvetica, sans-serif; font-size:10px; color:#000; line-height:140%; background:#fff none; overflow-y:scroll; }
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html body td { vertical-align:top; text-align:left; }
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h1 { padding:0px; margin:0px 0px 25px; font-family:Arial, Helvetica, sans-serif; font-size:1.5em; color:#d55000; line-height:100%; font-weight:normal; }
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h2 { padding:0px; margin:0px 0px 8px; font-family:Arial, Helvetica, sans-serif; font-size:1.2em; color:#000; font-weight:bold; line-height:140%; border-bottom:1px solid #d6d4d4; display:block; }
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h3 { padding:0px; margin:0px 0px 5px; font-family:Arial, Helvetica, sans-serif; font-size:1.1em; color:#000; font-weight:bold; line-height:140%; }
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a { color:#005fce; text-decoration:none; }
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a:hover { color:#005fce; text-decoration:underline; }
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a:visited { color:#004aa0; text-decoration:none; }
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p { padding:0px; margin:0px 0px 20px; }
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img { padding:0px; margin:0px 0px 20px; border:none; }
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p img, pre img, tt img, li img, h1 img, h2 img { margin-bottom:0px; }
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ul { padding:0px; margin:0px 0px 20px 23px; list-style:square; }
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ul li { padding:0px; margin:0px 0px 7px 0px; }
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ul li ul { padding:5px 0px 0px; margin:0px 0px 7px 23px; }
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ul li ol li { list-style:decimal; }
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ol { padding:0px; margin:0px 0px 20px 0px; list-style:decimal; }
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ol li { padding:0px; margin:0px 0px 7px 23px; list-style-type:decimal; }
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ol li ol { padding:5px 0px 0px; margin:0px 0px 7px 0px; }
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ol li ol li { list-style-type:lower-alpha; }
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ol li ul { padding-top:7px; }
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ol li ul li { list-style:square; }
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.content { font-size:1.2em; line-height:140%; padding: 20px; }
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pre, code { font-size:12px; }
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tt { font-size: 1.2em; }
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pre { margin:0px 0px 20px; }
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pre.codeinput { padding:10px; border:1px solid #d3d3d3; background:#f7f7f7; }
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pre.error { color:red; }
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@media print { pre.codeinput, pre.codeoutput { word-wrap:break-word; width:100%; } }
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span.keyword { color:#0000FF }
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span.comment { color:#228B22 }
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span.untermstring { color:#B20000 }
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span.syscmd { color:#B28C00 }
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span.typesection { color:#A0522D }
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.footer { width:auto; padding:10px 0px; margin:25px 0px 0px; border-top:1px dotted #878787; font-size:0.8em; line-height:140%; font-style:italic; color:#878787; text-align:left; float:none; }
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.footer p { margin:0px; }
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.footer a { color:#878787; }
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.footer a:hover { color:#878787; text-decoration:underline; }
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table th { padding:7px 5px; text-align:left; vertical-align:middle; border: 1px solid #d6d4d4; font-weight:bold; }
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table td { padding:7px 5px; text-align:left; vertical-align:top; border:1px solid #d6d4d4; }
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</style></head><body><div class="content"><h2>Contents</h2><div><ul><li><a href="#2">Input data</a></li><li><a href="#3">Boxes</a></li><li><a href="#4">Crop</a></li></ul></div><pre class="codeinput"><span class="comment">% Demonstration of image crop functions</span>
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<span class="comment">%</span>
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<span class="comment">% output = demoCrop(input)</span>
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<span class="comment">%</span>
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<span class="comment">% Example</span>
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<span class="comment">% demoCrop</span>
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<span class="comment">%</span>
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<span class="comment">% See also</span>
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<span class="comment">%</span>
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<span class="comment">% ------</span>
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<span class="comment">% Author: David Legland</span>
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<span class="comment">% e-mail: [email protected]</span>
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<span class="comment">% INRAE - BIA Research Unit - BIBS Platform (Nantes)</span>
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<span class="comment">% Created: 2022-06-24, using Matlab 9.12.0.1884302 (R2022a)</span>
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<span class="comment">% Copyright 2022 INRAE.</span>
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</pre><h2 id="2">Input data</h2><pre class="codeinput"><span class="comment">% read sample image</span>
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<span class="comment">% (provided within the @image/sampleFiles directory)</span>
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img = Image.read(<span class="string">'wheatGrainSlice.tif'</span>);
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figure; show(img);
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</pre><img vspace="5" hspace="5" src="demoCrop_01.png" alt=""> <h2 id="3">Boxes</h2><pre class="codeinput"><span class="comment">% need to segment image to obtain the region of the grain</span>
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seg = img &gt; 160;
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seg2 = areaOpening(killBorders(seg), 10);
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<span class="comment">% compute boxes</span>
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box = regionBoundingBox(seg2);
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obox = regionOrientedBox(seg2);
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<span class="comment">% display boxes over image</span>
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<span class="comment">% (requires MatGeom toolbox)</span>
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hold <span class="string">on</span>;
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drawBox(box, <span class="string">'color'</span>, <span class="string">'g'</span>, <span class="string">'linewidth'</span>, 2);
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drawOrientedBox(obox, <span class="string">'color'</span>, <span class="string">'m'</span>, <span class="string">'linewidth'</span>, 2);
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</pre><img vspace="5" hspace="5" src="demoCrop_02.png" alt=""> <h2 id="4">Crop</h2><pre class="codeinput">resCrop = crop(img, box);
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figure; show(resCrop)
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title(<span class="string">'Crop Box'</span>);
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write(resCrop, <span class="string">'wheatGrainCrop.tif'</span>);
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resCrop2 = cropOrientedBox(img, obox);
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figure; show(resCrop2)
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title(<span class="string">'Crop Oriented Box'</span>);
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write(resCrop, <span class="string">'wheatGrainCropOriented.tif'</span>);
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</pre><img vspace="5" hspace="5" src="demoCrop_03.png" alt=""> <img vspace="5" hspace="5" src="demoCrop_04.png" alt=""> <p class="footer"><br><a href="https://www.mathworks.com/products/matlab/">Published with MATLAB&reg; R2022a</a><br></p></div><!--
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##### SOURCE BEGIN #####
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% Demonstration of image crop functions
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%
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% output = demoCrop(input)
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%
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% Example
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% demoCrop
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%
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% See also
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%
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% REPLACE_WITH_DASH_DASHREPLACE_WITH_DASH_DASHREPLACE_WITH_DASH_DASH
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% Author: David Legland
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% e-mail: [email protected]
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% INRAE - BIA Research Unit - BIBS Platform (Nantes)
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% Created: 2022-06-24, using Matlab 9.12.0.1884302 (R2022a)
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% Copyright 2022 INRAE.
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%% Input data
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% read sample image
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% (provided within the @image/sampleFiles directory)
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img = Image.read('wheatGrainSlice.tif');
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figure; show(img);
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%% Boxes
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% need to segment image to obtain the region of the grain
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seg = img > 160;
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seg2 = areaOpening(killBorders(seg), 10);
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% compute boxes
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box = regionBoundingBox(seg2);
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obox = regionOrientedBox(seg2);
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% display boxes over image
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% (requires MatGeom toolbox)
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hold on;
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drawBox(box, 'color', 'g', 'linewidth', 2);
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drawOrientedBox(obox, 'color', 'm', 'linewidth', 2);
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%% Crop
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resCrop = crop(img, box);
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figure; show(resCrop)
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title('Crop Box');
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write(resCrop, 'wheatGrainCrop.tif');
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resCrop2 = cropOrientedBox(img, obox);
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figure; show(resCrop2)
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title('Crop Oriented Box');
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write(resCrop, 'wheatGrainCropOriented.tif');
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##### SOURCE END #####
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--></body></html>

‎demos/shape/html/demoCrop.png

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‎demos/shape/html/demoCrop_01.png

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‎demos/shape/html/demoCrop_02.png

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‎demos/shape/html/demoCrop_03.png

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‎demos/shape/html/demoCrop_04.png

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