perspective

问题 I am trying to get the bird's eye view perspective transform from camera intrinsic, extrinsic matrices and distortion coefficients. I tried using the answer from this question. The image used is the sample image left02.jpg from the opencv official github repo I calibrated the camera and found the intrinsic, extrinsic matrices and the distortion co-efficients. I undistored the image and found the pose. To check if the params are right. The equations I used to find the perspective

问题 I'm looking for the mathematical expression converting a 3D coordinate (x0,y0,z0) to a 2D (x1,y1) coordinate in a curvilinear perspective of radius R where the values of x1 and y1 are the angles of views {-90° .. +90°} of the original point. (source: ntua.gr) (image via http://www.ntua.gr/arch/geometry/mbk/histor.htm ) Thanks ! 回答1: About one year later , the solution was really simple. For a point having the coordinates: (x1,y1,z1) Then, to transform this point in a curvilinear drawing of

问题 I could not find the Java EE perspective in Eclipse Galileo. I want to develop a web application, but for this I need to change the Eclipse perspective. But, I could not find the Java EE perspective. Can anybody tell me how to add this to Eclipse? 回答1: Relevant steps: Go to "Help" -> "Install New Software...". In the new dialog, in the "Work with:" pull-down list, select "Indigo - http://download.eclipse.org/releases/indigo". (Note: Replace Indigo and the download list with download locations

问题 i have an slider and for cube effect i use css3's perspective:xxx; But when my element get value of perspective it and child elements loose added them z-index values, so mi images appearing in bottom of other elements. element.style { -webkit-perspective: 1000px; } I have removed given value of element after effect and it bring z-index values back .. but with other reason i cant remove it. So what can i do to not let to perspective affect on z-indexes ? Here is an example http://prognozplus

问题 i have an slider and for cube effect i use css3's perspective:xxx; But when my element get value of perspective it and child elements loose added them z-index values, so mi images appearing in bottom of other elements. element.style { -webkit-perspective: 1000px; } I have removed given value of element after effect and it bring z-index values back .. but with other reason i cant remove it. So what can i do to not let to perspective affect on z-indexes ? Here is an example http://prognozplus

问题 There are several examples on stack overflow of how to enable/disable the debug perspective from opening when the debugger activates (i.e., hits a breakpoint). This would be achieved by going to: Preferences -> Run/Debug -> Perspectives -> Open the associated perspective when application suspends My question is not about this. Whenever I start my server in debug mode, the debug perspective opens. Since I already have the debug view open in my custom perspective, this is not the behavior I

问题 Reference this link: https://developer.mozilla.org/en-US/docs/Web/CSS/perspective Perspective must be set to move a child element along the z-axis. The link above show examples of different perspective values, all of which set the z-axis in a diagonal direction. If I'm looking directly at the face of a 3D cube and I move it backwards (along the z-axis) it would look like it's getting smaller (moving away from me), not moving diagonally. So why does CSS have a diagonal z-axis by default? Is

问题 The application I am working on currently requires functionality for Perspective Image Distortion. Basically what I want to do is to allow users to load an image into the application and adjust its perspective view properties based on 4 corner points that they can specify. I had a look at ImageMagic. It has some distort functions with perpective adjustment but is very slow and some certain inputs are giving incorrect outputs. Any of you guys used any other library or algorithm. I am coding in

问题 While dragging the perspective tool bar to a different place in eclipse Juno, my eclipse got hang, and after restarting eclipse, the perspective bar gone. I tried googling but didnt find a solution to display that bar again. Anyone got a solution? 回答1: There are two things you can try: Reset your current perspective (Window/Reset perspective...). Although your configured set of views will get lost, it might bring back the perspective switcher. If that does not work, then you should reset the

问题 I got a custom perspecitve with an editor area declared in plugin.xml only. In addtion, I got a custom view, that is opened programatically. I want to stack this view with the editor area. If I set it in the perspective extension as initially visible, everything works fine. <view id="my.viewID" minimized="false" relationship="stack" relative="org.eclipse.ui.editorss" visible="false"> </view> However, if I set visible="false" , and use the following code to open it programmatically, it always