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Open Source Computer Vision Library https://opencv.org/
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opencv/modules/js/test/test_mat.js

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// //////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2013, OpenCV Foundation, all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//
// //////////////////////////////////////////////////////////////////////////////////////
// Author: Sajjad Taheri, University of California, Irvine. sajjadt[at]uci[dot]edu
//
// LICENSE AGREEMENT
// Copyright (c) 2015 The Regents of the University of California (Regents)
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the University nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
if (typeof module !== 'undefined' && module.exports) {
// The envrionment is Node.js
var cv = require('./opencv.js'); // eslint-disable-line no-var
}
QUnit.module('Core', {});
QUnit.test('test_mat_creation', function(assert) {
// Mat constructors.
// Mat::Mat(int rows, int cols, int type)
{
let mat = new cv.Mat(10, 20, cv.CV_8UC3);
assert.equal(mat.type(), cv.CV_8UC3);
assert.equal(mat.depth(), cv.CV_8U);
assert.equal(mat.channels(), 3);
assert.ok(mat.empty() === false);
let size = mat.size();
assert.equal(size.height, 10);
assert.equal(size.width, 20);
mat.delete();
}
// Mat::Mat(const Mat &)
{
// Copy from another Mat
let mat1 = new cv.Mat(10, 20, cv.CV_8UC3);
let mat2 = new cv.Mat(mat1);
assert.equal(mat2.type(), mat1.type());
assert.equal(mat2.depth(), mat1.depth());
assert.equal(mat2.channels(), mat1.channels());
assert.equal(mat2.empty(), mat1.empty());
let size1 = mat1.size;
let size2 = mat2.size();
assert.ok(size1[0] === size2[0]);
assert.ok(size1[1] === size2[1]);
mat1.delete();
mat2.delete();
}
// Mat::Mat(int rows, int cols, int type, void *data, size_t step=AUTO_STEP)
{
// 10 * 10 and one channel
let data = cv._malloc(10 * 10 * 1);
let mat = new cv.Mat(10, 10, cv.CV_8UC1, data, 0);
assert.equal(mat.type(), cv.CV_8UC1);
assert.equal(mat.depth(), cv.CV_8U);
assert.equal(mat.channels(), 1);
assert.ok(mat.empty() === false);
let size = mat.size();
assert.ok(size.height === 10);
assert.ok(size.width === 10);
mat.delete();
}
// Mat::Mat(int rows, int cols, int type, const Scalar& scalar)
{
// 2 * 2 8UC4 mat
let mat = new cv.Mat(2, 2, cv.CV_8UC4, [0, 1, 2, 3]);
for (let r = 0; r < mat.rows; r++) {
for (let c = 0; c < mat.cols; c++) {
let element = mat.ptr(r, c);
assert.equal(element[0], 0);
assert.equal(element[1], 1);
assert.equal(element[2], 2);
assert.equal(element[3], 3);
}
}
mat.delete();
}
// Mat::create(int, int, int)
{
let mat = new cv.Mat();
mat.create(10, 5, cv.CV_8UC3);
let size = mat.size();
assert.ok(mat.type() === cv.CV_8UC3);
assert.ok(size.height === 10);
assert.ok(size.width === 5);
assert.ok(mat.channels() === 3);
mat.delete();
}
// Mat::create(Size, int)
{
let mat = new cv.Mat();
mat.create({height: 10, width: 5}, cv.CV_8UC4);
let size = mat.size();
assert.ok(mat.type() === cv.CV_8UC4);
assert.ok(size.height === 10);
assert.ok(size.width === 5);
assert.ok(mat.channels() === 4);
mat.delete();
}
// clone
{
let mat = cv.Mat.ones(5, 5, cv.CV_8UC1);
let mat2 = mat.clone();
assert.equal(mat.channels, mat2.channels);
assert.equal(mat.size().height, mat2.size().height);
assert.equal(mat.size().width, mat2.size().width);
assert.deepEqual(mat.data, mat2.data);
mat.delete();
mat2.delete();
}
// copyTo
{
let mat = cv.Mat.ones(5, 5, cv.CV_8UC1);
let mat2 = new cv.Mat();
mat.copyTo(mat2);
assert.equal(mat.channels, mat2.channels);
assert.equal(mat.size().height, mat2.size().height);
assert.equal(mat.size().width, mat2.size().width);
assert.deepEqual(mat.data, mat2.data);
mat.delete();
mat2.delete();
}
// copyTo1
{
let mat = cv.Mat.ones(5, 5, cv.CV_8UC1);
let mat2 = new cv.Mat();
let mask = new cv.Mat(5, 5, cv.CV_8UC1, new cv.Scalar(1));
mat.copyTo(mat2, mask);
assert.equal(mat.channels, mat2.channels);
assert.equal(mat.size().height, mat2.size().height);
assert.equal(mat.size().width, mat2.size().width);
assert.deepEqual(mat.data, mat2.data);
mat.delete();
mat2.delete();
mask.delete();
}
// matFromArray
{
let arrayC1 = [0, -1, 2, -3];
let arrayC2 = [0, -1, 2, -3, 4, -5, 6, -7];
let arrayC3 = [0, -1, 2, -3, 4, -5, 6, -7, 9, -9, 10, -11];
let arrayC4 = [0, -1, 2, -3, 4, -5, 6, -7, 8, -9, 10, -11, 12, 13, 14, 15];
let mat8UC1 = cv.matFromArray(2, 2, cv.CV_8UC1, arrayC1);
let mat8UC2 = cv.matFromArray(2, 2, cv.CV_8UC2, arrayC2);
let mat8UC3 = cv.matFromArray(2, 2, cv.CV_8UC3, arrayC3);
let mat8UC4 = cv.matFromArray(2, 2, cv.CV_8UC4, arrayC4);
let mat8SC1 = cv.matFromArray(2, 2, cv.CV_8SC1, arrayC1);
let mat8SC2 = cv.matFromArray(2, 2, cv.CV_8SC2, arrayC2);
let mat8SC3 = cv.matFromArray(2, 2, cv.CV_8SC3, arrayC3);
let mat8SC4 = cv.matFromArray(2, 2, cv.CV_8SC4, arrayC4);
let mat16UC1 = cv.matFromArray(2, 2, cv.CV_16UC1, arrayC1);
let mat16UC2 = cv.matFromArray(2, 2, cv.CV_16UC2, arrayC2);
let mat16UC3 = cv.matFromArray(2, 2, cv.CV_16UC3, arrayC3);
let mat16UC4 = cv.matFromArray(2, 2, cv.CV_16UC4, arrayC4);
let mat16SC1 = cv.matFromArray(2, 2, cv.CV_16SC1, arrayC1);
let mat16SC2 = cv.matFromArray(2, 2, cv.CV_16SC2, arrayC2);
let mat16SC3 = cv.matFromArray(2, 2, cv.CV_16SC3, arrayC3);
let mat16SC4 = cv.matFromArray(2, 2, cv.CV_16SC4, arrayC4);
let mat32SC1 = cv.matFromArray(2, 2, cv.CV_32SC1, arrayC1);
let mat32SC2 = cv.matFromArray(2, 2, cv.CV_32SC2, arrayC2);
let mat32SC3 = cv.matFromArray(2, 2, cv.CV_32SC3, arrayC3);
let mat32SC4 = cv.matFromArray(2, 2, cv.CV_32SC4, arrayC4);
let mat32FC1 = cv.matFromArray(2, 2, cv.CV_32FC1, arrayC1);
let mat32FC2 = cv.matFromArray(2, 2, cv.CV_32FC2, arrayC2);
let mat32FC3 = cv.matFromArray(2, 2, cv.CV_32FC3, arrayC3);
let mat32FC4 = cv.matFromArray(2, 2, cv.CV_32FC4, arrayC4);
let mat64FC1 = cv.matFromArray(2, 2, cv.CV_64FC1, arrayC1);
let mat64FC2 = cv.matFromArray(2, 2, cv.CV_64FC2, arrayC2);
let mat64FC3 = cv.matFromArray(2, 2, cv.CV_64FC3, arrayC3);
let mat64FC4 = cv.matFromArray(2, 2, cv.CV_64FC4, arrayC4);
assert.deepEqual(mat8UC1.data, new Uint8Array(arrayC1));
assert.deepEqual(mat8UC2.data, new Uint8Array(arrayC2));
assert.deepEqual(mat8UC3.data, new Uint8Array(arrayC3));
assert.deepEqual(mat8UC4.data, new Uint8Array(arrayC4));
assert.deepEqual(mat8SC1.data8S, new Int8Array(arrayC1));
assert.deepEqual(mat8SC2.data8S, new Int8Array(arrayC2));
assert.deepEqual(mat8SC3.data8S, new Int8Array(arrayC3));
assert.deepEqual(mat8SC4.data8S, new Int8Array(arrayC4));
assert.deepEqual(mat16UC1.data16U, new Uint16Array(arrayC1));
assert.deepEqual(mat16UC2.data16U, new Uint16Array(arrayC2));
assert.deepEqual(mat16UC3.data16U, new Uint16Array(arrayC3));
assert.deepEqual(mat16UC4.data16U, new Uint16Array(arrayC4));
assert.deepEqual(mat16SC1.data16S, new Int16Array(arrayC1));
assert.deepEqual(mat16SC2.data16S, new Int16Array(arrayC2));
assert.deepEqual(mat16SC3.data16S, new Int16Array(arrayC3));
assert.deepEqual(mat16SC4.data16S, new Int16Array(arrayC4));
assert.deepEqual(mat32SC1.data32S, new Int32Array(arrayC1));
assert.deepEqual(mat32SC2.data32S, new Int32Array(arrayC2));
assert.deepEqual(mat32SC3.data32S, new Int32Array(arrayC3));
assert.deepEqual(mat32SC4.data32S, new Int32Array(arrayC4));
assert.deepEqual(mat32FC1.data32F, new Float32Array(arrayC1));
assert.deepEqual(mat32FC2.data32F, new Float32Array(arrayC2));
assert.deepEqual(mat32FC3.data32F, new Float32Array(arrayC3));
assert.deepEqual(mat32FC4.data32F, new Float32Array(arrayC4));
assert.deepEqual(mat64FC1.data64F, new Float64Array(arrayC1));
assert.deepEqual(mat64FC2.data64F, new Float64Array(arrayC2));
assert.deepEqual(mat64FC3.data64F, new Float64Array(arrayC3));
assert.deepEqual(mat64FC4.data64F, new Float64Array(arrayC4));
mat8UC1.delete();
mat8UC2.delete();
mat8UC3.delete();
mat8UC4.delete();
mat8SC1.delete();
mat8SC2.delete();
mat8SC3.delete();
mat8SC4.delete();
mat16UC1.delete();
mat16UC2.delete();
mat16UC3.delete();
mat16UC4.delete();
mat16SC1.delete();
mat16SC2.delete();
mat16SC3.delete();
mat16SC4.delete();
mat32SC1.delete();
mat32SC2.delete();
mat32SC3.delete();
mat32SC4.delete();
mat32FC1.delete();
mat32FC2.delete();
mat32FC3.delete();
mat32FC4.delete();
mat64FC1.delete();
mat64FC2.delete();
mat64FC3.delete();
mat64FC4.delete();
}
// matFromImageData
{
// Only test in browser
if (typeof window === 'undefined') {
return;
}
let canvas = window.document.createElement('canvas');
canvas.width = 2;
canvas.height = 2;
let ctx = canvas.getContext('2d');
ctx.fillStyle='#FF0000';
ctx.fillRect(0, 0, 1, 1);
ctx.fillRect(1, 1, 1, 1);
let imageData = ctx.getImageData(0, 0, 2, 2);
let mat = cv.matFromImageData(imageData);
assert.deepEqual(mat.data, new Uint8Array(imageData.data));
mat.delete();
}
// Mat(mat)
{
let mat = new cv.Mat(2, 2, cv.CV_8UC4, new cv.Scalar(1, 0, 1, 0));
let mat1 = new cv.Mat(mat);
let mat2 = mat;
assert.equal(mat.rows, mat1.rows);
assert.equal(mat.cols, mat1.cols);
assert.equal(mat.type(), mat1.type());
assert.deepEqual(mat.data, mat1.data);
mat.delete();
assert.equal(mat1.isDeleted(), false);
assert.equal(mat2.isDeleted(), true);
mat1.delete();
}
// mat.setTo
{
let mat = new cv.Mat(2, 2, cv.CV_8UC4);
let s = [0, 1, 2, 3];
mat.setTo(s);
assert.deepEqual(mat.ptr(0, 0), new Uint8Array(s));
assert.deepEqual(mat.ptr(0, 1), new Uint8Array(s));
assert.deepEqual(mat.ptr(1, 0), new Uint8Array(s));
assert.deepEqual(mat.ptr(1, 1), new Uint8Array(s));
let s1 = [0, 0, 0, 0];
mat.setTo(s1);
let mask = cv.matFromArray(2, 2, cv.CV_8UC1, [0, 1, 0, 1]);
mat.setTo(s, mask);
assert.deepEqual(mat.ptr(0, 0), new Uint8Array(s1));
assert.deepEqual(mat.ptr(0, 1), new Uint8Array(s));
assert.deepEqual(mat.ptr(1, 0), new Uint8Array(s1));
assert.deepEqual(mat.ptr(1, 1), new Uint8Array(s));
mat.delete();
mask.delete();
}
});
QUnit.test('test_mat_ptr', function(assert) {
const RValue = 3;
const GValue = 7;
const BValue = 197;
// cv.CV_8UC1 + Mat::ptr(int).
{
let mat = new cv.Mat(10, 10, cv.CV_8UC1);
let view = mat.data;
// Alter matrix[2, 1].
let step = 10;
view[2 * step + 1] = RValue;
// Access matrix[2, 1].
view = mat.ptr(2);
assert.equal(view[1], RValue);
mat.delete();
}
// cv.CV_8UC3 + Mat::ptr(int).
{
let mat = new cv.Mat(10, 10, cv.CV_8UC3);
let view = mat.data;
// Alter matrix[2, 1].
let step = 3 * 10;
view[2 * step + 3] = RValue;
view[2 * step + 3 + 1] = GValue;
view[2 * step + 3 + 2] = BValue;
// Access matrix[2, 1].
view = mat.ptr(2);
assert.equal(view[3], RValue);
assert.equal(view[3 + 1], GValue);
assert.equal(view[3 + 2], BValue);
mat.delete();
}
// cv.CV_8UC3 + Mat::ptr(int, int).
{
let mat = new cv.Mat(10, 10, cv.CV_8UC3);
let view = mat.data;
// Alter matrix[2, 1].
let step = 3 * 10;
view[2 * step + 3] = RValue;
view[2 * step + 3 + 1] = GValue;
view[2 * step + 3 + 2] = BValue;
// Access matrix[2, 1].
view = mat.ptr(2, 1);
assert.equal(view[0], RValue);
assert.equal(view[1], GValue);
assert.equal(view[2], BValue);
mat.delete();
}
const RValueF32 = 3.3;
const GValueF32 = 7.3;
const BValueF32 = 197.3;
const EPSILON = 0.001;
// cv.CV_32FC1 + Mat::ptr(int).
{
let mat = new cv.Mat(10, 10, cv.CV_32FC1);
let view = mat.data32F;
// Alter matrix[2, 1].
let step = 10;
view[2 * step + 1] = RValueF32;
// Access matrix[2, 1].
view = mat.floatPtr(2);
assert.ok(Math.abs(view[1] - RValueF32) < EPSILON);
mat.delete();
}
// cv.CV_32FC3 + Mat::ptr(int).
{
let mat = new cv.Mat(10, 10, cv.CV_32FC3);
let view = mat.data32F;
// Alter matrix[2, 1].
let step = mat.step1(0);
view[2 * step + 3] = RValueF32;
view[2 * step + 3 + 1] = GValueF32;
view[2 * step + 3 + 2] = BValueF32;
// Access matrix[2, 1].
view = mat.floatPtr(2);
assert.ok(Math.abs(view[3] - RValueF32) < EPSILON);
assert.ok(Math.abs(view[3 + 1] - GValueF32) < EPSILON);
assert.ok(Math.abs(view[3 + 2] - BValueF32) < EPSILON);
mat.delete();
}
// cv.CV_32FC3 + Mat::ptr(int, int).
{
let mat = new cv.Mat(10, 10, cv.CV_32FC3);
let view = mat.data32F;
// Alter matrix[2, 1].
let step = mat.step1(0);
view[2 * step + 3] = RValueF32;
view[2 * step + 3 + 1] = GValueF32;
view[2 * step + 3 + 2] = BValueF32;
// Access matrix[2, 1].
view = mat.floatPtr(2, 1);
assert.ok(Math.abs(view[0] - RValueF32) < EPSILON);
assert.ok(Math.abs(view[1] - GValueF32) < EPSILON);
assert.ok(Math.abs(view[2] - BValueF32) < EPSILON);
mat.delete();
}
});
QUnit.test('test_mat_zeros', function(assert) {
let zeros = new Uint8Array(10*10).fill(0);
// Mat::zeros(int, int, int)
{
let mat = cv.Mat.zeros(10, 10, cv.CV_8UC1);
let view = mat.data;
assert.deepEqual(view, zeros);
mat.delete();
}
// Mat::zeros(Size, int)
{
let mat = cv.Mat.zeros({height: 10, width: 10}, cv.CV_8UC1);
let view = mat.data;
assert.deepEqual(view, zeros);
mat.delete();
}
});
QUnit.test('test_mat_ones', function(assert) {
let ones = new Uint8Array(10*10).fill(1);
// Mat::ones(int, int, int)
{
let mat = cv.Mat.ones(10, 10, cv.CV_8UC1);
let view = mat.data;
assert.deepEqual(view, ones);
}
// Mat::ones(Size, int)
{
let mat = cv.Mat.ones({height: 10, width: 10}, cv.CV_8UC1);
let view = mat.data;
assert.deepEqual(view, ones);
}
});
QUnit.test('test_mat_eye', function(assert) {
let eye4by4 = new Uint8Array([1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1]);
// Mat::eye(int, int, int)
{
let mat = cv.Mat.eye(4, 4, cv.CV_8UC1);
let view = mat.data;
assert.deepEqual(view, eye4by4);
}
// Mat::eye(Size, int)
{
let mat = cv.Mat.eye({height: 4, width: 4}, cv.CV_8UC1);
let view = mat.data;
assert.deepEqual(view, eye4by4);
}
});
QUnit.test('test_mat_miscs', function(assert) {
// Mat::col(int)
{
let mat = cv.matFromArray(2, 2, cv.CV_8UC2, [1, 2, 3, 4, 5, 6, 7, 8]);
let col = mat.col(1);
assert.equal(col.isContinuous(), false);
assert.equal(col.ptr(0, 0)[0], 3);
assert.equal(col.ptr(0, 0)[1], 4);
assert.equal(col.ptr(1, 0)[0], 7);
assert.equal(col.ptr(1, 0)[1], 8);
col.delete();
mat.delete();
}
// Mat::row(int)
{
let mat = cv.Mat.zeros(5, 5, cv.CV_8UC2);
let row = mat.row(1);
let view = row.data;
assert.equal(view[0], 0);
assert.equal(view[4], 0);
row.delete();
mat.delete();
}
// Mat::convertTo(Mat, int, double, double)
{
let mat = cv.Mat.ones(5, 5, cv.CV_8UC3);
let grayMat = cv.Mat.zeros(5, 5, cv.CV_8UC1);
mat.convertTo(grayMat, cv.CV_8U, 2, 1);
// dest = 2 * source(x, y) + 1.
let view = grayMat.data;
assert.equal(view[0], (1 * 2) + 1);
mat.convertTo(grayMat, cv.CV_8U);
// dest = 1 * source(x, y) + 0.
assert.equal(view[0], 1);
mat.convertTo(grayMat, cv.CV_8U, 2);
// dest = 2 * source(x, y) + 0.
assert.equal(view[0], 2);
grayMat.delete();
mat.delete();
}
// split
{
const R =7;
const G =13;
const B =29;
let mat = cv.Mat.ones(5, 5, cv.CV_8UC3);
let view = mat.data;
view[0] = R;
view[1] = G;
view[2] = B;
let bgrPlanes = new cv.MatVector();
cv.split(mat, bgrPlanes);
assert.equal(bgrPlanes.size(), 3);
let rMat = bgrPlanes.get(0);
view = rMat.data;
assert.equal(view[0], R);
let gMat = bgrPlanes.get(1);
view = gMat.data;
assert.equal(view[0], G);
let bMat = bgrPlanes.get(2);
view = bMat.data;
assert.equal(view[0], B);
mat.delete();
rMat.delete();
gMat.delete();
bgrPlanes.delete();
bMat.delete();
}
// elemSize
{
let mat = cv.Mat.ones(5, 5, cv.CV_8UC3);
assert.equal(mat.elemSize(), 3);
assert.equal(mat.elemSize1(), 1);
let mat2 = cv.Mat.zeros(5, 5, cv.CV_8UC1);
assert.equal(mat2.elemSize(), 1);
assert.equal(mat2.elemSize1(), 1);
let mat3 = cv.Mat.eye(5, 5, cv.CV_16UC3);
assert.equal(mat3.elemSize(), 2 * 3);
assert.equal(mat3.elemSize1(), 2);
mat.delete();
mat2.delete();
mat3.delete();
}
// step
{
let mat = cv.Mat.ones(5, 5, cv.CV_8UC3);
assert.equal(mat.step[0], 15);
assert.equal(mat.step[1], 3);
let mat2 = cv.Mat.zeros(5, 5, cv.CV_8UC1);
assert.equal(mat2.step[0], 5);
assert.equal(mat2.step[1], 1);
let mat3 = cv.Mat.eye(5, 5, cv.CV_16UC3);
assert.equal(mat3.step[0], 30);
assert.equal(mat3.step[1], 6);
mat.delete();
mat2.delete();
mat3.delete();
}
// dot
{
let mat = cv.Mat.ones(5, 5, cv.CV_8UC1);
let mat2 = cv.Mat.eye(5, 5, cv.CV_8UC1);
assert.equal(mat.dot(mat), 25);
assert.equal(mat.dot(mat2), 5);
assert.equal(mat2.dot(mat2), 5);
mat.delete();
mat2.delete();
}
// mul
{
const FACTOR = 5;
let mat = cv.Mat.ones(4, 4, cv.CV_8UC1);
let mat2 = cv.Mat.eye(4, 4, cv.CV_8UC1);
let expected = new Uint8Array([FACTOR, 0, 0, 0,
0, FACTOR, 0, 0,
0, 0, FACTOR, 0,
0, 0, 0, FACTOR]);
let mat3 = mat.mul(mat2, FACTOR);
assert.deepEqual(mat3.data, expected);
mat.delete();
mat2.delete();
mat3.delete();
}
});
QUnit.test('test mat access', function(assert) {
// test memory view
{
let data = new Uint8Array([0, 0, 0, 255, 0, 1, 2, 3]);
let dataPtr = cv._malloc(8);
let dataHeap = new Uint8Array(cv.HEAPU8.buffer, dataPtr, 8);
dataHeap.set(new Uint8Array(data.buffer));
let mat = new cv.Mat(8, 1, cv.CV_8UC1, dataPtr, 0);
let unsignedCharView = new Uint8Array(data.buffer);
let charView = new Int8Array(data.buffer);
let shortView = new Int16Array(data.buffer);
let unsignedShortView = new Uint16Array(data.buffer);
let intView = new Int32Array(data.buffer);
let float32View = new Float32Array(data.buffer);
let float64View = new Float64Array(data.buffer);
assert.deepEqual(unsignedCharView, mat.data);
assert.deepEqual(charView, mat.data8S);
assert.deepEqual(shortView, mat.data16S);
assert.deepEqual(unsignedShortView, mat.data16U);
assert.deepEqual(intView, mat.data32S);
assert.deepEqual(float32View, mat.data32F);
assert.deepEqual(float64View, mat.data64F);
}
// test ucharAt(i)
{
let data = new Uint8Array([0, 0, 0, 255, 0, 1, 2, 3]);
let dataPtr = cv._malloc(8);
let dataHeap = new Uint8Array(cv.HEAPU8.buffer, dataPtr, 8);
dataHeap.set(new Uint8Array(data.buffer));
let mat = new cv.Mat(8, 1, cv.CV_8UC1, dataPtr, 0);
assert.equal(mat.ucharAt(0), 0);
assert.equal(mat.ucharAt(1), 0);
assert.equal(mat.ucharAt(2), 0);
assert.equal(mat.ucharAt(3), 255);
assert.equal(mat.ucharAt(4), 0);
assert.equal(mat.ucharAt(5), 1);
assert.equal(mat.ucharAt(6), 2);
assert.equal(mat.ucharAt(7), 3);
}
// test ushortAt(i)
{
let data = new Uint16Array([0, 1000, 65000, 255, 0, 1, 2, 3]);
let dataPtr = cv._malloc(16);
let dataHeap = new Uint16Array(cv.HEAPU8.buffer, dataPtr, 8);
dataHeap.set(new Uint16Array(data.buffer));
let mat = new cv.Mat(8, 1, cv.CV_16SC1, dataPtr, 0);
assert.equal(mat.ushortAt(0), 0);
assert.equal(mat.ushortAt(1), 1000);
assert.equal(mat.ushortAt(2), 65000);
assert.equal(mat.ushortAt(3), 255);
assert.equal(mat.ushortAt(4), 0);
assert.equal(mat.ushortAt(5), 1);
assert.equal(mat.ushortAt(6), 2);
assert.equal(mat.ushortAt(7), 3);
}
// test intAt(i)
{
let data = new Int32Array([0, -1000, 65000, 255, -2000000, -1, 2, 3]);
let dataPtr = cv._malloc(32);
let dataHeap = new Int32Array(cv.HEAPU32.buffer, dataPtr, 8);
dataHeap.set(new Int32Array(data.buffer));
let mat = new cv.Mat(8, 1, cv.CV_32SC1, dataPtr, 0);
assert.equal(mat.intAt(0), 0);
assert.equal(mat.intAt(1), -1000);
assert.equal(mat.intAt(2), 65000);
assert.equal(mat.intAt(3), 255);
assert.equal(mat.intAt(4), -2000000);
assert.equal(mat.intAt(5), -1);
assert.equal(mat.intAt(6), 2);
assert.equal(mat.intAt(7), 3);
}
// test floatAt(i)
{
const EPSILON = 0.001;
let data = new Float32Array([0, -10.5, 650.001, 255, -20.1, -1.2, 2, 3.5]);
let dataPtr = cv._malloc(32);
let dataHeap = new Float32Array(cv.HEAPU32.buffer, dataPtr, 8);
dataHeap.set(new Float32Array(data.buffer));
let mat = new cv.Mat(8, 1, cv.CV_32FC1, dataPtr, 0);
assert.equal(Math.abs(mat.floatAt(0)-0) < EPSILON, true);
assert.equal(Math.abs(mat.floatAt(1)+10.5) < EPSILON, true);
assert.equal(Math.abs(mat.floatAt(2)-650.001) < EPSILON, true);
assert.equal(Math.abs(mat.floatAt(3)-255) < EPSILON, true);
assert.equal(Math.abs(mat.floatAt(4)+20.1) < EPSILON, true);
assert.equal(Math.abs(mat.floatAt(5)+1.2) < EPSILON, true);
assert.equal(Math.abs(mat.floatAt(6)-2) < EPSILON, true);
assert.equal(Math.abs(mat.floatAt(7)-3.5) < EPSILON, true);
}
// test intAt(i,j)
{
let mat = cv.Mat.eye({height: 3, width: 3}, cv.CV_32SC1);
assert.equal(mat.intAt(0, 0), 1);
assert.equal(mat.intAt(0, 1), 0);
assert.equal(mat.intAt(0, 2), 0);
assert.equal(mat.intAt(1, 0), 0);
assert.equal(mat.intAt(1, 1), 1);
assert.equal(mat.intAt(1, 2), 0);
assert.equal(mat.intAt(2, 0), 0);
assert.equal(mat.intAt(2, 1), 0);
assert.equal(mat.intAt(2, 2), 1);
mat.delete();
}
});
QUnit.test('test_mat_operations', function(assert) {
// test minMaxLoc
{
let src = cv.Mat.ones(4, 4, cv.CV_8UC1);
src.data[2] = 0;
src.data[5] = 2;
let result = cv.minMaxLoc(src);
assert.equal(result.minVal, 0);
assert.equal(result.maxVal, 2);
assert.deepEqual(result.minLoc, {x: 2, y: 0});
assert.deepEqual(result.maxLoc, {x: 1, y: 1});
src.delete();
}
});
QUnit.test('test_mat_roi', function(assert) {
// test minMaxLoc
{
let mat = cv.matFromArray(2, 2, cv.CV_8UC1, [0, 1, 2, 3]);
let roi = mat.roi(new cv.Rect(1, 1, 1, 1));
assert.equal(roi.rows, 1);
assert.equal(roi.cols, 1);
assert.deepEqual(roi.data, new Uint8Array([mat.ucharAt(1, 1)]));
mat.delete();
roi.delete();
}
});
QUnit.test('test_mat_range', function(assert) {
{
let src = cv.matFromArray(2, 2, cv.CV_8UC1, [0, 1, 2, 3]);
let mat = src.colRange(0, 1);
assert.equal(mat.isContinuous(), false);
assert.equal(mat.rows, 2);
assert.equal(mat.cols, 1);
assert.equal(mat.ucharAt(0), 0);
assert.equal(mat.ucharAt(1), 2);
mat.delete();
mat = src.colRange({start: 0, end: 1});
assert.equal(mat.isContinuous(), false);
assert.equal(mat.rows, 2);
assert.equal(mat.cols, 1);
assert.equal(mat.ucharAt(0), 0);
assert.equal(mat.ucharAt(1), 2);
mat.delete();
mat = src.rowRange(1, 2);
assert.equal(mat.rows, 1);
assert.equal(mat.cols, 2);
assert.deepEqual(mat.data, new Uint8Array([2, 3]));
mat.delete();
mat = src.rowRange({start: 1, end: 2});
assert.equal(mat.rows, 1);
assert.equal(mat.cols, 2);
assert.deepEqual(mat.data, new Uint8Array([2, 3]));
mat.delete();
src.delete();
}
});
QUnit.test('test_mat_diag', function(assert) {
// test diag
{
let mat = cv.matFromArray(3, 3, cv.CV_8UC1, [0, 1, 2, 3, 4, 5, 6, 7, 8]);
let d = mat.diag();
let d1 = mat.diag(1);
let d2 = mat.diag(-1);
assert.equal(mat.isContinuous(), true);
assert.equal(d.isContinuous(), false);
assert.equal(d1.isContinuous(), false);
assert.equal(d2.isContinuous(), false);
assert.equal(d.ucharAt(0), 0);
assert.equal(d.ucharAt(1), 4);
assert.equal(d.ucharAt(2), 8);
assert.equal(d1.ucharAt(0), 1);
assert.equal(d1.ucharAt(1), 5);
assert.equal(d2.ucharAt(0), 3);
assert.equal(d2.ucharAt(1), 7);
mat.delete();
d.delete();
d1.delete();
d2.delete();
}
});