transformation

I have only just started experimenting with OpenCV a little bit. I have a setup of an LCD with a static position, and I'd like to extract what is being displayed on the screen from the image. I've seen the chessboard pattern used for calibrating a camera, but it seems like that is used to undistort the image, which isn't totally what I want to do. I was thinking I'd display the chessboard on the LCD and then figure out the transformations needed to convert the image of the LCD into the ideal view of the chessboard directly overhead and cropped. Then I would store the transformations, change

Does anyone know if there is a way to "transform" specific sections of values instead of replacing the whole value or an attribute? For example, I've got several appSettings entries that specify the Urls for different webservices. These entries are slightly different in the dev environment than the production environment. Some are less trivial than others <!-- DEV ENTRY --> <appSettings> <add key="serviceName1_WebsService_Url" value="http://wsServiceName1.dev.domain.com/v1.2.3.4/entryPoint.asmx" /> <add key="serviceName2_WebsService_Url" value="http://ma1-lab.lab1.domain.com/v1.2.3.4

The project I am working on involves reading a lot of service endpoints (url) from a config file. Since the list would be quite large I decided to keep them in a custom config file to keep my web.config clean and small. I included the custom section to my web as below: <mySection configSource="myConfig.config" /> I works perfectly fine. But the problem of transformation appears during the deployment of the project to different environments. I have three web.config files: Web.config Web.Uat.config Web.Release.config While the transformation web.config works, the transformations for custom

Given a list of objects, I am needing to transform it into a dataset where each item in the list is represented by a row and each property is a column in the row. This DataSet will then be passed to an Aspose.Cells function in order to create an Excel document as a report. Say I have the following: public class Record { public int ID { get; set; } public bool Status { get; set; } public string Message { get; set; } } Given a List records, how do I transform it into a DataSet as follows: ID Status Message 1 true "message" 2 false "message2" 3 true "message3" ... At the moment the only thing I

I'm trying to place points (made via fabric.Circle ) on the corners of a fabric.Polygon . The polygon may be moved, scaled or rotated by the user. However, after each modification I want to have the new coordinates of the polygon to place my circles there. While digging deeper into this topic I found this great explanation of transformation matrices. I thought it's the perfect solution for what I want to achieve. But as you can see in the Fiddle, my points are always way off my polygon. As I'm not firm with geometric transformation etc. I hope someone can find my error and tell me what I'm