我在使用eclipse neon-1在tomcat-8上运行应用程序时出现此错误,它使用的是spring-4.3.3,hibernate-5.2.4和maven.
??: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/LabWebServletHibernate]]
at java.util.concurrent.FutureTask.report(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:915)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1407)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1397)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/LabWebServletHibernate]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
... 6 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@2b8b2271]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4969)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5099)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
... 6 more
Caused by: org.apache.catalina.LifecycleException: Failed …我有一张图像，我想在图像的特定区域上执行 HE 或 CLAHE 操作。我已经为图像准备了蒙版。有什么可能的方法吗？
我读过很多文章说剪辑限制是CDF斜率的限制。但是在OpenCV中，该参数可以设置为0~999...，我不知道这个参数的最大值，PDF的总和不是等于1吗？斜率怎么可能大于1？剪辑限制的另一种说法是，这是对每个灰度级计数的限制，例如，如果我将 tile 设置为 (8,8)，则该 tile 中的任何灰度级都不可能超过 64 像素，但是如果我设置限制超过64，结果仍在变化。请以任何观点启发我。