pentaho transformation

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Use the least square method in image transformation to solve the Affine Transformation Parameters

Set the original image to f (x, y), and the distorted image to f (x ', y ') to restore to f (x, y), you need to find the Conversion Relationship Between the (x', y') Coordinate and (x, y) Coordinate. This Conversion Relationship is called coordinate transformation, (x, y) = T (x', y '). The distortion of a scene during imaging may cause the image to be out of proportion. The affine transform can be used to correct various distortion. First, calculat

Chapter 6-image transformation-Hov Line Transformation (cvhoughlines2)

Hof transformation is a method for finding straight lines, circles, and other simple shapes in an image. Hof line transformation is to find a straight line in a binary image by using Hof transformation. Using cv_hough_probabilistic, corresponding to ppht (cumulative probability Hof transformation )? The specific implem

ZP's ExtJS study notes (ii)--calendar Transformation (example transformation, schedule management implementation, JSON-to-date data pre-and post-processing)

The calendar that was made half a month ago reminds me to transform the calendar of example in Extjs4.2.1. First of all to see the effect:The presentation of the Schedule homepage:Show by week and Schedule edit window:It's the most beautiful thing I've ever done since I joined the profession, and of course it's ExtJS powerful features. In the study ExtJS prophase Transformation example is a very good learning means, I benefited from it.I use Ssh2+extj

EF architecture ~ The path to EF asynchronous Transformation ~ Warehouse interface transformation, ef Architecture

EF architecture ~ The path to EF asynchronous Transformation ~ Warehouse interface transformation, ef Architecture Back to directoryC #5.0 brings parallel programming {C #1.0 hosting code → C #2.0 generic → C # 3.0LINQ → C #4.0 dynamic language → C #5.0 asynchronous programming} With C #5.0 in. after net4.5 came out, their parallel technologies gradually became increasingly popular. This heat has been passe

Time-domain and frequency-domain transformation-meaning of Fourier Transformation

I am so ashamed to learn "digital signal processing" for a long time. I also remembered the Fourier transformation formula and made the FFT program, but I don't know what the significance of Fourier transformation is! That's it !! Fortunately, I understand it. Aside from the mathematical meaning, let alone some practical meanings. Fourier transform is used to convert signals from the time domain to the freq

A good example of learning upward transformation and downward transformation

Upward transformation: Father F=new Child ();Downward transformation:Father F=new Child 2 ();Child 2 c= (Child 2) f;//child c=f; This is wrong, assigning a parent object directly to a subclass is an error because the parent class object is not necessarily an instance of the subclass.A quadrilateral is not necessarily parallelogram may be trapezoidal, the more specific objects have more characteristics, the more abstract objects have fewer features, in

Transformation operations do not change the form of objects in the memory. transformation is not an object form.

Transformation operations do not change the form of objects in the memory. transformation is not an object form. 1/* 2 requirement: design a simple java program to prove that the forced conversion statement cannot change its form in the memory. 3 idea: design a parent-child class and create a subclass object, transform the Child class up and check whether the object changes in the memory before and after th

The upward transformation and downward transformation of Java SE

Packageobject;//shift up-down transformation Public classUp_down_convert {/*Move up * 1. On the transformation object can use and manipulate subclasses to inherit or override the method * 2. The action and use of "new member" or "new method" of the child class is lost on the previous transformation*/ Public voidUpconvert () {Father father_a=NewSon ();

SharpGL learning notes (3) Projection Transformation and viewpoint transformation, sharpgl learning notes

SharpGL learning notes (3) Projection Transformation and viewpoint transformation, sharpgl learning notes Starting from this section, we use the VS2010 extension of SharpGL to directly generate the SharpGL project. If you do not see the following SharpGL project when creating a project, find a directory named "SharpGL 2.0 Visual Studio Extension" in the source code of SharpGL and install the directory name

On the ultimate explanation of affine transformation and perspective transformation

Recently to use some of the graphics to learn things, naturally unavoidable involves the concept of affine transformation and perspective transformation, unfortunately, the past textbooks and online interpretation of a large number of consensus is still not clear concept, the following quote "Learning OpenCV" a picture, simple and clear explanation:Visible:Affine transf

Image processing-chamfer distance transformation and image processing-chamfer Transformation

Image processing-chamfer distance transformation and image processing-chamfer Transformation Corner width and Distance Transformation for image processing Chamfer Distance Transform in image processing is often used in object matching and recognition, The algorithm generates the distance value of each pixel based on a 3x3 window, which is divided into two steps t

Open-source database Fab-Transformation simple use of parsing, transformation

Open-source database Fab-Transformation simple use of parsing, transformationReprinted, please indicate the path of the great ox from Wang Xiaoying Similar to the IPhone's floating button operation, the operation is only fixed. Of course, after modification, it can also be changed. Here, we just want to give the party a sense of well-being and add some understanding of ourselves, let everyone use it. Once you read it, you can understand it. If you don

Projection Transformation and view Transformation

Notes: 0. Projection Transformation: describes how to specify the shape and direction of a visual object (Viewing Volume. View transform: explains how to control the transformation from 3D model coordinates to screen coordinates. 1. No matter perspective projection or parallel projection (orthogonal projection), only objects in the visual object can be seen. 2. Default point of view for OpenGL (Eyex, eyey,

Transformation and memory allocation in Java inheritance, and transformation and allocation in java inheritance

Transformation and memory allocation in Java inheritance, and transformation and allocation in java inheritance When reading a book, a piece of code can be messy. The code is like this: Package inheritance; abstract class People {public String tag = "Crazy Java handout"; // ① public String name = "Parent"; String getName () {return name ;}} class Student extends People {// defines a private tag instance var

Object upward transformation and downward Transformation

Today, I have read about the transformation of objects and learned a little bit more clearly: First, create a person class. The Code is as follows: Package COM. test; public class person {string name; string age; void introduce () {system. out. println ("My name is" + name + "My age is" + age );}} The student code is as follows: Package COM. test; public class student extends person {string address; void introduce () {super. introduce (); system. out

Opencv affine transformation and perspective transformation

It is basically the answer to Exercise 7 in Chapter 4th of learning opencv. First, you can write your own perspective conversion code: // Perspective conversion The running effect of this program is relatively easy to analyze, that is, after the four corners of an image are changed, the image changes accordingly, each angle is a point in a two-dimensional plane with the x and y attributes. The x and y of the four points are indirectly stored in the df1 to the df8 variable. Note the differences

Fourier transformation and inverse transformation written by the previous Nb-human

//////////////////////////////////////// //////////////////// Internal definitions# Define Pi (double) 3.14159265359/* Complex Number */Typedef struct{Double re;Double im;} Complex;/* Complex add */Complex add (complex C1, complex C2){Complex C;C. Re = c1.re + c2.re;C. Im = c1.im + c2.im;Return C;}/* Complex substract */Complex sub (complex C1, complex C2){Complex C;C. Re = c1.re-c2.re;C. Im = c1.im-c2.im;Return C;}/* Complex multiple */Complex MUL (complex C1, complex C2){Complex C;C. Re = c1.r

[Soft test] upward transformation VS simple factory, soft test transformation vs Factory

[Soft test] upward transformation VS simple factory, soft test transformation vs Factory Today we will not talk about concepts. Let's start with a program. public class Test{public static void main(String args[]){Test test=new Test();Animal a=new Animal("name");Cat c=new Cat("catname","name");Dog d=new Dog("dogname","black");test.f(a);test.f(c);test.f(d);}public void f(Animal a){System.out.println("name:"+a

Chapter 6-image transformation-Laplace transformation (cvlaplace)

Laplace transformation can also be used as edge detection and defined in the form of quadratic derivatives. Laplace transform is an integral transformation commonly used in Engineering Mathematics. For the comparison and significance of Laplace and Fourier transformation, refer to here Bytes ------------------------------------------------------------------

Rational view of Baidu transformation period SEO policy needs to follow the transformation

Baidu from June onwards to now has been constantly in the algorithm upgrade and service strategy changes, from the beginning of the mandatory to the current public nature of the continuous change, the previous Baidu in the change of the optimization policy will never make any explanation on the change, and now Baidu in the change algorithm upgrade will be announced when the announcement, Whether or not these statements are true, at least Baidu changed, and the site's SEO optimization guidelines

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