如何在鼠标移动中获取fabric.js中图像的rgb值.我使用了图像对象的getFill()方法,但它返回(0,0,0).请帮我
我正在尝试为我的应用程序获取Facebook用户电子邮件.但是当我查询时,电子邮件地址将返回为undefined
.我没有得到如何处理它.
这是我的代码 -
<body>
<script>
function statusChangeCallback(response) {
console.log('statusChangeCallback');
console.log(response);
if (response.status === 'connected') {
testAPI();
} else if (response.status === 'not_authorized') {
FB.login(function(response) {}, {
scope: 'email'
});
document.getElementById('status').innerHTML = 'Please log ' +
'into this app.';
} else {
FB.login(function(response) {}, {
scope: 'email'
});
document.getElementById('status').innerHTML = 'Please log ' +
'into Facebook.';
}
}
function checkLoginState() {
FB.getLoginStatus(function(response) {
statusChangeCallback(response);
});
}
window.fbAsyncInit = function() {
FB.init({
appId: 'app id',
cookie: true, // …
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我正在尝试更改图像的颜色。因此,我使用以下代码
public class Picture {
String img_name;
BufferedImage buf_img;
int width;
int height;
public Picture(String name) {
this.img_name = name;
try {
buf_img = ImageIO.read(new File(img_name));
} catch (IOException ex) {
Logger.getLogger(Picture.class.getName()).log(Level.SEVERE, null, ex);
}
}
public Picture(int w, int h) {
this.width = w;
this.height = h;
buf_img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
}
public int width() {
width = buf_img.getWidth();
return width;
}
public int height() {
height = buf_img.getHeight();
return height;
}
public Color get(int col, int …
Run Code Online (Sandbox Code Playgroud) 我正在努力在matlab中分割图像.我的目标是从ct扫描图像中提取肝脏..
function [] = Code4( image_file )
image = imread(image_file);
[height, width, planes] = size(image);
rgb = reshape(image, height, width * planes);
r = image(:, :, 1);
g = image(:, :, 2);
b = image(:, :, 3);
% since r,g & b are of equeal values, we will be considering only r.
mask=r>120 & r<140 ; % range of color component for liver
labels = bwlabel(mask);
id = labels(111, 200);
% get the mask containing only the …
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