Merge pull request #24248 from opencv-pushbot:gitee/alalek/issue_22751

JavaScript: include LUT support

modules/js/test/test_core.js

@@ -0,0 +1,41 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+
+if (typeof module !== 'undefined' && module.exports) {
+    // The environment is Node.js
+    var cv = require('./opencv.js'); // eslint-disable-line no-var
+}
+
+QUnit.module('Core', {});
+
+QUnit.test('test_LUT', function(assert) {
+    // test LUT
+    {
+        let src = cv.matFromArray(3, 3, cv.CV_8UC1, [255, 128, 0, 0, 128, 255, 1, 2, 254]);
+        let lutTable = [];
+        for (let i = 0; i < 256; i++)
+        {
+           lutTable[i] = 255 - i;
+        }
+        let lut = cv.matFromArray(1, 256, cv.CV_8UC1, lutTable);
+        let dst = new cv.Mat();
+
+        cv.LUT(src, lut, dst);
+
+        //console.log(dst.data);
+        assert.equal(dst.ucharAt(0), 0);
+        assert.equal(dst.ucharAt(1), 127);
+        assert.equal(dst.ucharAt(2), 255);
+        assert.equal(dst.ucharAt(3), 255);
+        assert.equal(dst.ucharAt(4), 127);
+        assert.equal(dst.ucharAt(5), 0);
+        assert.equal(dst.ucharAt(6), 254);
+        assert.equal(dst.ucharAt(7), 253);
+        assert.equal(dst.ucharAt(8), 1);
+
+        src.delete();
+        lut.delete();
+        dst.delete();
+    }
+});

modules/js/test/test_mat.js

@@ -73,7 +73,7 @@ if (typeof module !== 'undefined' && module.exports) {
     var cv = require('./opencv.js'); // eslint-disable-line no-var
 }
 
-QUnit.module('Core', {});
+QUnit.module('CoreMat', {});
 
 QUnit.test('test_mat_creation', function(assert) {
     // Mat constructors.

modules/js/test/tests.html

@@ -52,12 +52,12 @@
               if (window.cv instanceof Promise) {
                 window.cv.then((target) => {
                    window.cv = target;
-                   //console.log(cv.getBuildInformation());
+                   console.log(cv.getBuildInformation());
                    QUnit.start();
                 })
               } else {
                 // for backward compatible
-                // console.log(cv.getBuildInformation());
+                console.log(cv.getBuildInformation());
                 QUnit.start();
               }
             },
@@ -108,6 +108,7 @@
         <script type="application/javascript" async src="opencv.js" onerror="opencvjs_LoadError()"></script>
         <script type="application/javascript" src="test_mat.js"></script>
         <script type="application/javascript" src="test_utils.js"></script>
+        <script type="application/javascript" src="test_core.js"></script>
         <script type="application/javascript" src="test_imgproc.js"></script>
         <script type="application/javascript" src="test_objdetect.js"></script>
         <script type="application/javascript" src="test_video.js"></script>

modules/js/test/tests.js

@@ -44,10 +44,15 @@ testrunner.options.maxBlockDuration = 20000; // cause opencv_js.js need time to
 testrunner.run(
     {
         code: 'opencv.js',
-        tests: ['test_mat.js', 'test_utils.js', 'test_imgproc.js',
-                'test_objdetect.js', 'test_video.js', 'test_features2d.js',
+        tests: ['test_mat.js',
+                'test_utils.js',
+                'test_core.js',
+                'test_imgproc.js',
+                'test_objdetect.js',
+                'test_video.js',
+                'test_features2d.js',
                 'test_photo.js',
-                'test_calib3d.js'
+                'test_calib3d.js',
         ],
     },
     function(err, report) {

platforms/js/opencv_js.config.py

@@ -9,6 +9,7 @@ core = {
         'perspectiveTransform', 'polarToCart', 'pow', 'randn', 'randu', 'reduce', 'repeat', 'rotate', 'setIdentity', 'setRNGSeed',
         'solve', 'solvePoly', 'split', 'sqrt', 'subtract', 'trace', 'transform', 'transpose', 'vconcat',
         'setLogLevel', 'getLogLevel',
+        'LUT',
     ],
     'Algorithm': [],
 }