json transformation

1. Inverse TransformationConstant transformation, defined as IX: Rn-> RM, in (x) = x; equivalent to transformation from itself to itself;Define the inverse conversion, and convert FX: Rn-> RM. If f'y: Rm-> RN, f' of = in and fof' = IM, f' is called the inverse transformation of F, they can also be called inverse functions. These two conditions can actually prove

1. Mathematical Analysis In the previous article, I directly used the Rotation Transformation Matrix during rotation. At that time, I felt very embarrassed because I didn't say how to generate the matrix before. 1) the subtle relationship between matrices and Vectors If you still remember the geometric meaning of vector addition, it is not difficult to understand the following equation: [X] [x] [0] [0] [1] [0] [0] V = [y] = [0] + [y] + [0] = x * [0]

Converts an image into another form. For example, Fourier transform converts the image into a spectrum component. Convolution-Basis of Transformation Cvfilter2d source image SRC and destination image DST size should be the same Note: The coefficient of the convolution kernel should be of the floating point type, and the cv_32f must be used to initialize the matrix. The cvfilter2d function internally processes the boundary-cvcopymakeborder (

Transformation is based on inheritance, which is a mechanism of code reuse in object-oriented languages, through inheritance, subclasses can reuse the function of the parent class, and if the parent class does not meet the requirements of the current subclass, the subclass can override the methods in the parent class to extend it.Transition up: The object that the subclass refers to is converted to a parent class type called upward

Have not quite understood this concept, so searched the internet a bit article reprinted from: http://www.cnblogs.com/fickleness/p/3149011.htmlTransformation is based on inheritance, which is a mechanism of code reuse in object-oriented languages, through inheritance, subclasses can reuse the function of the parent class, and if the parent class does not meet the requirements of the current subclass, the subclass can override the methods in the parent class to extend it.Transition up: The object

Linear transformation Affine Transformation: includes translation, rotation, and proportional transformation. This transformation can maintain the parallelism of Linear building and is reversible. Projection Transformation: includes perspective

The principle of transform is 2D matrix transformation in computer graphics, Before starting, let's first review the next simple linear algebra knowledge: matrix and vector multiplication. If it is too complex to be used, only the product of the 3-dimensional vector and the 3x3 matrix is required: Next, let's talk about the relationship between transform and matrix multiplication. After rendering any HTML element, we can get a bitmap and perform a ma

multiplication. The same is true for matrix multiplication.For example, in d3d, D3d is a row vector, row-first storage, OpenGL is a column vector, and column-first storage. Although the same matrix is stored in d3d or OpenGL, the conversion results are the same,Because OpenGL transforms a vector as a column vector and multiply each column of the same matrix to realize the same Transformation in linear algebra. It is usually difficult to see the code

Come on! Digital Transformation @ bishengyuan, a pioneer in hyper-converged Road and pioneer in the road Special Plan-"Come on! Digital transformation is already the second time we have met. As a leader in the Chinese health tea market, bisheng has reconstructed its original information system with the help of a hyper-converged architecture. Does bishen

In the map, the non-connected lookup transformation is separate from the pipeline. You can use the: LKP reference qualifier to write an expression to invoke lookups in other transformations. Common uses for non-connected lookups include: Test the result of a lookup in an expression Filter rows based on search results Mark rows as updates based on found results, such as a dimension table with updated slow changes

Java Study Notes 15 --- instanceof and downward transformation, The cold and cough stopped for a few more days, and the update is resumed today. Let's take a look at the concepts of instanceof and downward Transformation: 1. instanceof Instanceof is a binary operator. Its usage is:Boolean result = a instanceof ClassA,Determines whether object a is an instance of the ClassA class. If yes, true is returned; o

Getting started with java -- Object Transformation Object type conversion is often encountered during programming, as is the java platform, such as some basic types of data transformation and composite data conversion. Example The java language is mainly divided into upward transformation and downward transformation