我对此进行了大量研究,我认为我的逻辑已经过时了,几乎到此为止,但似乎无法理解为什么 cv2.imshow() 窗口中没有显示任何内容只是一个灰色框,但好消息是我能够检测人脸并裁剪该人脸,然后将其保存在文件夹中。
你能不能解释一下我哪里出错了
#Author: Waheed Rafiq
#Research Student Birmingham City University
#Date: 03/11/2016
#Description :detect and Save capture face in a folder.
#Import library required for Capture face.
import cv2
#import the cascade for face detection
FaceClassifier =cv2.CascadeClassifier
('haarcascade_frontalface_default.xml')
# access the webcam (every webcam has
capture = cv2.VideoCapture(0)
while(True):
# Capture frame-by-frame
ret, frame = capture.read()
if not capture:
print "Error opening webcam device"
sys.exit(1)
# to detect faces in video
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
faces = FaceClassifier.detectMultiScale(gray, …Run Code Online (Sandbox Code Playgroud) 我正在研究一个小项目,我正在尝试学习F#的功能方式,由于一些奇怪的原因,我无法生成随机数,因此无法获得随机日期.这是我的F#代码
let IfancyHerList = [("Sara",1); ("Saima",2); ("Zoe",3);("Scarlett",4);
("Jennifer",5);("Sandra Bullock",6)]
let MyGirlFriend = List.pick (fun funToNight ->
let n = rand.Next(10)
match funToNight with
| (value,n ) -> Some value
|_ -> None) IfancyHerList
printfn "Your date for tonight is %s lucky fella" MyGirlFriend
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let n = rand.Next(10)确实生成一个随机数但不在匹配块中
任何建议都会受到欢迎
谢谢
我正在使用Microsoft Azure认知服务进行人脸识别项目。不太确定为什么我不能更正自己的JSON格式错误的语法,我以为6个月前就确定了这一点。我想创建一个组名,所以我调用“ Person Group API”,每次我遵循MS示例时,我的代码都会出错,但是在API测试控制台中,这没有问题,这是我从MS网站借来的代码示例:
{ "error": { "code": "ResourceNotFound", "message": "The requested resource was not found." } }
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以及在控制台模式下运行的代码:
static async void CreateGroup()
{
string key1 = "YourKey";
// azure the one should work
var client = new HttpClient();
var queryString = HttpUtility.ParseQueryString(string.Empty);
// Request headers
client.DefaultRequestHeaders.Add
("Ocp-Apim-Subscription-Key", key1);
var uri = "https://westus.api.cognitive.microsoft.com/face/v1.0/
persongroups/{personGroupId}?" + queryString;
HttpResponseMessage response;
// Request body
string groupname = "myfriends";
string body = "{\"name\":\"" + groupname + ","+ "\"}";
// Request body
using (var …Run Code Online (Sandbox Code Playgroud)