小编Ray*_*tor的帖子

我想将a转换为vector<vector<double> >,Mat因为我需要对此值应用自定义平滑滤镜.

下图显示了CORRECT值

我试过这个.

std::vector<std::vector<double> > angles;
calculateAngles(angles);
Mat matAngles(angles.size(), angles.at(0).size(), CV_64FC1, angles.data());

但是第一列中的值被错误转换,值为2.12566e-314.

结果图像

我也尝试将值直接放入Mat.

void calculateAngles(cv::Mat& im, cv::Mat& angles, int blockSize, int(*f)(int x, int y), int(*g)(int x, int y)){

static int ySobel[3][3] = {{-1, 0, 1}, {-2, 0, 2}, {-1, 0, 1}};
static int xSobel[3][3] = {{-1, -2, -1}, {0, 0, 0}, {1, 2, 1}};

angles.create(cv::Size(im.cols/blockSize+1, im.rows/blockSize+1), CV_64FC1);

int nominator;
int denominator;
int GX, GY;
double angle;
for(int i = 1; i …

如何在 Java 中使用 Play!2.0 OpenID？

我找到了一个例子，但我收到了这个错误：

! @6af3een21 - Internal server error, for request [GET /login/verify] ->

play.core.ActionInvoker$$anonfun$receive$1$$anon$1: Execution exception [[Errors$BAD_RESPONSE$: null]]
at play.core.ActionInvoker$$anonfun$receive$1.apply(Invoker.scala:82) [play_2.9.1.jar:2.0]
at play.core.ActionInvoker$$anonfun$receive$1.apply(Invoker.scala:63) [play_2.9.1.jar:2.0]
at akka.actor.Actor$class.apply(Actor.scala:290) [akka-actor.jar:2.0]
at play.core.ActionInvoker.apply(Invoker.scala:61) [play_2.9.1.jar:2.0]
at akka.actor.ActorCell.invoke(ActorCell.scala:617) [akka-actor.jar:2.0]
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:179) [akka-actor.jar:2.0]
Caused by: play.api.libs.openid.Errors$BAD_RESPONSE$: null
at play.api.libs.openid.Errors$BAD_RESPONSE$.<clinit>(OpenIDError.scala) ~[play_2.9.1.jar:2.0]
at play.api.libs.openid.OpenID$$anonfun$verifiedId$7.apply(OpenID.scala:88) ~[play_2.9.1.jar:2.0]
at play.api.libs.openid.OpenID$$anonfun$verifiedId$7.apply(OpenID.scala:88) ~[play_2.9.1.jar:2.0]
at scala.util.control.Exception$Catch$$anonfun$either$1.apply(Exception.scala:110) ~[scala-library.jar:na]
at scala.util.control.Exception$Catch$$anonfun$either$1.apply(Exception.scala:110) ~[scala-library.jar:na]
at scala.util.control.Exception$Catch.apply(Exception.scala:88) ~[scala-library.jar:na]

Java 中有关 OpenID的文档是不够的。