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Code Issues Projects Releases Wiki Activity

Fix all examples & clean up

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This commit is contained in:
Marc Bachmann 2014-10-02 23:35:41 +02:00
parent da8add8b51
commit 8515b05245
21 changed files with 274 additions and 312 deletions
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20
examples/Face.js
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@ -1,20 +0,0 @@
var cv = require('../lib/opencv');
var COLOR = [0, 255, 0]; //default red
var thickness = 2; // default 1
cv.readImage('./mona.png', function(err, im) {
im.detectObject('../data/haarcascade_frontalface_alt2.xml', {}, function(err, faces) {
for(var k = 0; k < faces.length; k++) {
face = faces[k];
im.rectangle([face.x, face.y], [face.x + face.width, face.y + face.height], COLOR, 2);
}
im.save('/tmp/salida.png');
});
});

20
examples/addweighted.js
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@ -1,16 +1,14 @@
var cv = require('../lib/opencv');
cv.readImage("./files/mona.png", function(err, orig) {
if (err) throw err;
cv.readImage("./mona.png", function(err, orig) {
cv.readImage("./over_text.png", function(err, over_text) {
var result = new cv.Matrix(orig.width(), orig.height());
result.addWeighted(orig, 0.7, over_text, 0.9);
result.save("/tmp/weighted.png");
});
cv.readImage("./files/over_text.png", function(err, over_text) {
if (err) throw err;
var result = new cv.Matrix(orig.width(), orig.height());
result.addWeighted(orig, 0.7, over_text, 0.9);
result.save("./tmp/weighted.png");
console.log('Image saved to ./tmp/weighted.png');
});
});

15
examples/camera.js
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@ -1,13 +1,12 @@
var cv = require('../lib/opencv');
var camera = new cv.VideoCapture(0);
var window = new cv.NamedWindow('Video', 0)
setInterval(function() {
camera.read(function(err, im) {
//im.save('/tmp/cam.png');
});
}, 1000);
camera.read(function(err, im) {
if (err) throw err;
window.show(im);
window.blockingWaitKey(0, 50);
});
}, 20);

18
examples/car-detection.js Normal file
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@ -0,0 +1,18 @@
var cv = require('../lib/opencv');
cv.readImage("./files/car1.jpg", function(err, im){
if (err) throw err;
if (im.width() < 1 || im.height() < 1) throw new Error('Image has no size');
im.detectObject("../data/hogcascade_cars_sideview.xml", {}, function(err, cars){
if (err) throw err;
for (var i=0; i < cars.length; i++){
var x = cars[i];
im.rectangle([x.x, x.y], [x.width, x.height]);
}
im.save('./tmp/car-detection.jpg');
console.log('Image saved to ./tmp/car-detection.jpg');
});
});

16
examples/car_detection.js
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@ -1,16 +0,0 @@
var cv = require('../lib/opencv')
, assert = require('assert')
, fs =require('fs')
cv.readImage("./car1.jpg", function(err, im){
im.detectObject("../data/hogcascade_cars_sideview.xml", {}, function(err, cars){
for (var i=0;i<cars.length; i++){
var x = cars[i];
im.rectangle([x.x, x.y], [x.width, x.height]);
}
im.save('./cars.jpg');
});
});

14
examples/color-filter.js Normal file
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@ -0,0 +1,14 @@
var cv = require('../lib/opencv');
// (B)lue, (G)reen, (R)ed
var lower_threshold = [46, 57, 83];
var upper_threshold = [80, 96, 115];
cv.readImage('./files/coin1.jpg', function(err, im) {
if (err) throw err;
if (im.width() < 1 || im.height() < 1) throw new Error('Image has no size');
im.inRange(lower_threshold, upper_threshold);
im.save('./tmp/coin_detected.jpg');
console.log('Image saved to ./tmp/coin_detected.jpg');
});

12
examples/color_filter.js
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@ -1,12 +0,0 @@
var cv = require('../lib/opencv');
// (B)lue, (G)reen, (R)ed
var lower_threshold = [46, 57, 83];
var upper_threshold = [80, 96, 115];
cv.readImage('./coin1.jpg', function(err, im) {
im.inRange(lower_threshold, upper_threshold);
im.save('./coin_detected.jpg');
});

52
examples/contours.js
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@ -5,37 +5,39 @@ var highThresh = 100;
var nIters = 2;
var maxArea = 2500;
var GREEN = [0, 255, 0]; //B, G, R
var WHITE = [255, 255, 255]; //B, G, R
var RED = [0, 0, 255]; //B, G, R
var GREEN = [0, 255, 0]; // B, G, R
var WHITE = [255, 255, 255]; // B, G, R
var RED = [0, 0, 255]; // B, G, R
cv.readImage('./stuff.png', function(err, im) {
cv.readImage('./files/stuff.png', function(err, im) {
if (err) throw err;
if (im.width() < 1 || im.height() < 1) throw new Error('Image has no size');
var big = new cv.Matrix(im.height(), im.width());
var all = new cv.Matrix(im.height(), im.width());
var big = new cv.Matrix(im.height(), im.width());
var all = new cv.Matrix(im.height(), im.width());
im.convertGrayscale();
im_canny = im.copy();
im.convertGrayscale();
im_canny = im.copy();
im_canny.canny(lowThresh, highThresh);
im_canny.dilate(nIters);
im_canny.canny(lowThresh, highThresh);
im_canny.dilate(nIters);
contours = im_canny.findContours();
contours = im_canny.findContours();
for(i = 0; i < contours.size(); i++) {
if(contours.area(i) > maxArea) {
var moments = contours.moments(i);
var cgx = Math.round(moments.m10/moments.m00);
var cgy = Math.round(moments.m01/moments.m00);
big.drawContour(contours, i, GREEN);
big.line([cgx - 5, cgy], [cgx + 5, cgy], RED);
big.line([cgx, cgy - 5], [cgx, cgy + 5], RED);
}
}
for(i = 0; i < contours.size(); i++) {
if(contours.area(i) > maxArea) {
var moments = contours.moments(i);
var cgx = Math.round(moments.m10 / moments.m00);
var cgy = Math.round(moments.m01 / moments.m00);
big.drawContour(contours, i, GREEN);
big.line([cgx - 5, cgy], [cgx + 5, cgy], RED);
big.line([cgx, cgy - 5], [cgx, cgy + 5], RED);
}
}
all.drawAllContours(contours, WHITE);
all.drawAllContours(contours, WHITE);
big.save('./big.png');
all.save('./all.png');
big.save('./tmp/big.png');
all.save('./tmp/all.png');
console.log('Image saved to ./tmp/big.png && ./tmp/all.png');
});

24
examples/convert-image.js Executable file
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@ -0,0 +1,24 @@
var cv = require('../lib/opencv');
cv.readImage('./files/mona.png', function(err, im) {
if (err) throw err;
if (im.width() < 1 || im.height() < 1) throw new Error('Image has no size');
img_hsv = im.copy();
img_gray = im.copy();
img_hsv.convertHSVscale();
img_gray.convertGrayscale();
console.log(img_gray.pixel(100,100));
im.save('./tmp/nor.png');
img_hsv.save('./tmp/hsv.png');
img_gray.save('./tmp/gray.png');
img_crop = im.crop(50,50,250,250);
img_crop.save('./tmp/crop.png');
console.log('Image saved to ./tmp/{crop|nor|hsv|gray}.png');
});

24
examples/convert_image.js
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@ -1,24 +0,0 @@
var cv = require('../lib/opencv');
cv.readImage("./mona.png", function(err, im) {
img_hsv = im.copy();
img_gray = im.copy();
img_hsv.convertHSVscale();
img_gray.convertGrayscale();
console.log(img_gray.pixel(100,100));
im.save("/tmp/nor.png");
img_hsv.save("/tmp/hsv.png");
img_gray.save("/tmp/gray.png");
img_crop = im.crop(50,50,250,250);
img_crop.save("crop.png");
console.log("Guardado");
});

65
examples/detect-shapes.js
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@ -1,9 +1,4 @@
#!/usr/bin/env node
//
// Detects triangles and quadrilaterals
//
var cv = require('../lib/opencv');
var lowThresh = 0;
@ -11,42 +6,46 @@ var highThresh = 100;
var nIters = 2;
var minArea = 2000;
var BLUE = [0, 255, 0]; //B, G, R
var RED = [0, 0, 255]; //B, G, R
var GREEN = [0, 255, 0]; //B, G, R
var WHITE = [255, 255, 255]; //B, G, R
var BLUE = [0, 255, 0]; // B, G, R
var RED = [0, 0, 255]; // B, G, R
var GREEN = [0, 255, 0]; // B, G, R
var WHITE = [255, 255, 255]; // B, G, R
cv.readImage('./shapes.jpg', function(err, im) {
cv.readImage('./files/shapes.jpg', function(err, im) {
if (err) throw err;
var out = new cv.Matrix(im.height(), im.width());
width = im.width()
height = im.height()
if (width < 1 || height < 1) throw new Error('Image has no size');
im.convertGrayscale();
im_canny = im.copy();
var out = new cv.Matrix(height, width);
im.convertGrayscale();
im_canny = im.copy();
im_canny.canny(lowThresh, highThresh);
im_canny.dilate(nIters);
im_canny.canny(lowThresh, highThresh);
im_canny.dilate(nIters);
contours = im_canny.findContours();
contours = im_canny.findContours();
for (i = 0; i < contours.size(); i++) {
for(i = 0; i < contours.size(); i++) {
if (contours.area(i) < minArea) continue;
if(contours.area(i) < minArea) continue;
var arcLength = contours.arcLength(i, true);
contours.approxPolyDP(i, 0.01 * arcLength, true);
var arcLength = contours.arcLength(i, true);
contours.approxPolyDP(i, 0.01 * arcLength, true);
switch(contours.cornerCount(i)) {
case 3:
out.drawContour(contours, i, GREEN);
break;
case 4:
out.drawContour(contours, i, RED);
break;
default:
out.drawContour(contours, i, WHITE);
}
}
switch(contours.cornerCount(i)) {
case 3:
out.drawContour(contours, i, GREEN);
break;
case 4:
out.drawContour(contours, i, RED);
break;
default:
out.drawContour(contours, i, WHITE);
}
}
out.save('./out.png');
out.save('./tmp/detect-shapes.png');
console.log('Image saved to ./tmp/detect-shapes.png');
});

22
examples/face-detection-rectangle.js Executable file
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@ -0,0 +1,22 @@
var cv = require('../lib/opencv');
var COLOR = [0, 255, 0]; // default red
var thickness = 2; // default 1
cv.readImage('./files/mona.png', function(err, im) {
if (err) throw err;
if (im.width() < 1 || im.height() < 1) throw new Error('Image has no size');
im.detectObject('../data/haarcascade_frontalface_alt2.xml', {}, function(err, faces) {
if (err) throw err;
for (var i = 0; i < faces.length; i++) {
face = faces[i];
im.rectangle([face.x, face.y], [face.x + face.width, face.y + face.height], COLOR, 2);
}
im.save('./tmp/face-detection-rectangle.png');
console.log('Image saved to ./tmp/face-detection-rectangle.png');
});
});

18
examples/face-detection.js Executable file
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@ -0,0 +1,18 @@
var cv = require('../lib/opencv');
cv.readImage("./files/mona.png", function(err, im){
if (err) throw err;
if (im.width() < 1 || im.height() < 1) throw new Error('Image has no size');
im.detectObject("../data/haarcascade_frontalface_alt.xml", {}, function(err, faces){
if (err) throw err;
for (var i = 0; i < faces.length; i++){
var face = faces[i];
im.ellipse(face.x + face.width / 2, face.y + face.height / 2, face.width / 2, face.height / 2);
}
im.save('./tmp/face-detection.png');
console.log('Image saved to ./tmp/face-detection.png');
});
});

64
examples/face-proxy.js
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@ -1,46 +1,30 @@
/*
// Face recognition proxy
var http = require('http'),
request = require('request'),
cv = require('../lib/opencv');
Face recognition proxy
http.createServer(function(req, resp){
var url = req.url.slice(1);
request({uri:url, encoding:'binary'}, function(err, r, body){
if (err) return resp.end(err.stack);
if (!/image\//.test(r.headers['content-type'])) return resp.end('Not an image');
*/
cv.readImage(new Buffer(body, 'binary'), function(err, im){
if (err) return resp.end(err.stack);
if (im.width() < 1 || im.height() < 1) return resp.end('Image has no size');
var http = require('http')
, request = require('request')
, cv = require('../lib/opencv')
, face_cascade = new cv.CascadeClassifier("./data/haarcascade_frontalface_alt.xml")
im.detectObject('../data/haarcascade_frontalface_alt.xml', {}, function(err, faces) {
if (err) return resp.end(err.stack);
for (var i = 0; i < faces.length; i++){
var face = faces[i];
im.ellipse(face.x + face.width / 2, face.y + face.height / 2, face.width / 2, face.height / 2);
}
resp.writeHead(200, {'Content-Type': 'image/jpeg'});
resp.end(im.toBuffer());
});
});
});
http.createServer(function(req, resp){
var url = req.url.slice(1);
console.log(url);
if (url.indexOf('http') != 0){
return request({uri:'http://google.com'}).pipe(resp)
}
// TODO make sure image
if (url.indexOf(".jpg", url.length - 4) !== -1 ||
url.indexOf(".png", url.length - 4) !== -1){
request({uri:url, encoding:'binary'}, function(err, r, body){
if (err) throw err;
cv.readImage(new Buffer(body, 'binary'), function(err, im){
im.faceDetect(im, {}, function(err, faces){
for (var i=0;i<faces.length; i++){
var x = faces[i]
im.ellipse(x.x + x.width/2, x.y + x.height/2, x.width/2, x.height/2);
}
//console.log(faces);
resp.writeHead(200, {'Content-Type': 'image/jpeg'});
resp.end(im.toBuffer());
});
});
})
} else {
request({uri:url || 'http://google.com'}).pipe(resp)
}
}).listen(1901)
}).listen(3000, function(){ console.log('Listening on http://localhost:3000'); })

18
examples/face_detection.js
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@ -1,18 +0,0 @@
var cv = require('../lib/opencv')
, assert = require('assert')
, fs =require('fs')
//console.log(cv.version)
cv.readImage("./mona.png", function(err, im){
im.detectObject("./haarcascade_frontalface_alt.xml", {}, function(err, faces){
for (var i=0;i<faces.length; i++){
var x = faces[i];
im.ellipse(x.x + x.width/2, x.y + x.height/2, x.width/2, x.height/2);
}
im.save('./out.png');
});
});

11
examples/motion-track.js
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@ -2,19 +2,21 @@ var path = require('path'),
cv = require('../lib/opencv');
// When opening a file, the full path must be passed to opencv
var vid = new cv.VideoCapture(path.join(__dirname, "motion.mov"));
var vid = new cv.VideoCapture(path.join(__dirname, 'files', 'motion.mov'));
vid.read(function(err, mat){
var track = new cv.TrackedObject(mat, [420, 110, 490, 170], {channel: "value"});
if (err) throw err;
var track = new cv.TrackedObject(mat, [420, 110, 490, 170], {channel: 'value'});
var x = 0;
var iter = function(){
vid.read(function(err, m2){
x++;
var rec = track.track(m2)
console.log(">>", x, ":" , rec)
console.log('>>', x, ':' , rec)
if (x % 10 == 0){
m2.rectangle([rec[0], rec[1]], [rec[2], rec[3]])
// m2.save('./out-motiontrack-' + x + '.jpg')
// m2.save('./out-motiontrack-' + x + '.jpg')
}
if (x<100)
iter();
@ -22,4 +24,3 @@ vid.read(function(err, mat){
}
iter();
})

55
examples/quad-crosses.js
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@ -1,9 +1,4 @@
#!/usr/bin/env node
//
// Finds quadrilaterals and fills them with an X
//
var cv = require('../lib/opencv');
var lowThresh = 0;
@ -17,39 +12,41 @@ var RED = [0, 0, 255]; //B, G, R
var GREEN = [0, 255, 0]; //B, G, R
var WHITE = [255, 255, 255]; //B, G, R
cv.readImage('./files/quads.jpg', function(err, im) {
if (err) throw err;
if (im.width() < 1 || im.height() < 1) throw new Error('Image has no size');
cv.readImage('./quads.jpg', function(err, im) {
var out = im.copy();
var out = im.copy();
im.convertGrayscale();
im_canny = im.copy();
im.convertGrayscale();
im_canny = im.copy();
im_canny.canny(lowThresh, highThresh);
im_canny.dilate(nIters);
im_canny.canny(lowThresh, highThresh);
im_canny.dilate(nIters);
contours = im_canny.findContours();
contours = im_canny.findContours();
for (i = 0; i < contours.size(); i++) {
for(i = 0; i < contours.size(); i++) {
var area = contours.area(i);
if (area < minArea || area > maxArea) continue;
var area = contours.area(i);
if(area < minArea || area > maxArea) continue;
var arcLength = contours.arcLength(i, true);
contours.approxPolyDP(i, 0.01 * arcLength, true);
var arcLength = contours.arcLength(i, true);
contours.approxPolyDP(i, 0.01 * arcLength, true);
if (contours.cornerCount(i) != 4) continue;
if(contours.cornerCount(i) != 4) continue;
var points = [
contours.point(i, 0),
contours.point(i, 1),
contours.point(i, 2),
contours.point(i, 3)
]
var points = [
contours.point(i, 0),
contours.point(i, 1),
contours.point(i, 2),
contours.point(i, 3)
]
out.line([points[0].x,points[0].y], [points[2].x, points[2].y], RED);
out.line([points[1].x,points[1].y], [points[3].x, points[3].y], RED);
}
out.line([points[0].x,points[0].y], [points[2].x, points[2].y], RED);
out.line([points[1].x,points[1].y], [points[3].x, points[3].y], RED);
}
out.save('./out.png');
out.save('./tmp/quad-crosses.png');
console.log('Image saved to ./tmp/quad-crosses.png');
});

30
examples/salt.js
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@ -1,27 +1,17 @@
var cv = require('../lib/opencv');
cv.readImage("./mona.png", function(err, im) {
salt(im, 3000);
im.save("/tmp/salt.png");
cv.readImage("./files/mona.png", function(err, im) {
salt(im, 3000);
im.save("./tmp/salt.png");
console.log('Image saved to ./tmp/salt.png');
});
function salt(img, n) {
if ((var channels img.channels()) != 3) return console.log('Image has only %s Channel. It\'s not possible to salt this image.', channels)
if (img.channels() == 1) {
console.log("1 Canales");
} else if (img.channels() == 3) {
for(k = 0; k < n; k ++) {
i = Math.random() * img.width();
j = Math.random() * img.height();
img.set(j, i, 255);
}
}
for(var i = 0; i < n; i ++) {
x = Math.random() * img.width();
y = Math.random() * img.height();
img.set(y, x, 255);
}
}

49
examples/take-face-pics.js
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@ -1,31 +1,24 @@
var cv = require('../lib/opencv')
var cv = require('../lib/opencv');
var vid = new cv.VideoCapture(0);
var vid = new cv.VideoCapture(0)
vid.read(function(err, im){
if (err) throw err;
im.detectObject(cv.FACE_CASCADE, {}, function(err, faces){
if (err) throw err;
if (!faces.length) return console.log("No Faces");
var snap = function(){
vid.read(function(err, im){
im.detectObject(cv.FACE_CASCADE, {}, function(err, faces){
if (!faces){
console.log("No Faces")
return;
}
var face = faces[0]
, ims = im.size()
var im2 = im.roi(face.x, face.y, face.width, face.height)
/*
im.adjustROI(
-face.y
, (face.y + face.height) - ims[0]
, -face.x
, (face.x + face.width) - ims[1])
*/
im2.save('out.jpg')
})
});
}
snap()
var face = faces[0];
var ims = im.size();
var im2 = im.roi(face.x, face.y, face.width, face.height)
/*
im.adjustROI(
-face.y
, (face.y + face.height) - ims[0]
, -face.x
, (face.x + face.width) - ims[1])
*/
im2.save('./tmp/take-face-pics.jpg')
console.log('Image saved to ./tmp/take-face-pics.jpg');
})
});

16
examples/warp-image.js Normal file
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@ -0,0 +1,16 @@
var cv = require('../lib/opencv');
cv.readImage("./mona.png", function(err, im) {
if (err) throw err;
width = im.width();
height = im.height();
if (width < 1 || height < 1) throw new Error('Image has no size');
var srcArray = [0, 0, width, 0, width, height, 0, height];
var dstArray = [0, 0, width * 0.9, height * 0.1, width, height, width * 0.2, height * 0.8];
var xfrmMat = im.getPerspectiveTransform(srcArray, dstArray);
im.warpPerspective(xfrmMat, width, height, [255, 255, 255]);
im.save("./warp-image.png");
console.log('Image saved to ./tmp/warp-image.png');
});

23
examples/warp_image.js
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@ -1,23 +0,0 @@
var cv = require('../lib/opencv');
cv.readImage("./mona.png", function(err, im) {
var srcArray = [
0,0,
im.width(),0,
im.width(),im.height(),
0,im.height()];
var dstArray = [
0,0,
im.width()*.9,im.height()*.1,
im.width(),im.height(),
im.width()*.2,im.height()*.8];
var xfrmMat = im.getPerspectiveTransform(srcArray,dstArray);
img_warp = im.copy();
img_warp.warpPerspective(xfrmMat,im.width,im.height,[255,255,255]);
img_warp.save("/tmp/mona_warp.png");
});