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CC150: rotate a matrix 90 degreesAn image is represented as a matrix of n X n, and a function is written to rotate the image 90 degrees. No extra storage spaceWe assume that we want to
Use homogeneous coordinates to transform the Matrix
/* Input a character matrix of N * n, rotate it counter-clockwise for 90 degrees, and then output:After calculation, the transformation matrix of the N * n square
Data Structure Analysis: Two-dimensional arrays are used for Matrix storage. However, to store the converted matrix, two-dimensional arrays must be defined for storage because the rows and columns cannot be equal.
Question Analysis: The key lies in column-to-column conversion. First, the rows in the original matrix are converted to converted columns. The columns
Rotate a 4x4 array counter-clockwise for 90 degrees and then output it. Random Input of the original array data is required, 4 X degrees
// Rotate a 4x4 array counter-clockwise for 90 degrees
Label: style blog HTTP color Io ar Java for Data
Question:
You are givenNXN2D matrix representing an image.
Rotate the image by 90 degrees (clockwise ).
Follow up:Cocould you do this in-place?
Analysis:
The two-dimensional array a [n] [N] rotates 90
Title: Given an image represented by the n*n matrix, where each pixel is 4 bytes in size, write a method that rotates the image 90 degrees. Can you do this without taking up extra memory space?So, how do you exchange these four sides? One approach is to copy the above into an array, then move the left side to the top, move the bottom to the left, and so on. This
A while ago a friend encountered such a problem: the image in situ clockwise rotation 90 degrees, do not open up new space. This is a seemingly simple question, and it is not easy to study and find out. After some exploration, finally found the correct algorithm, but when the use of OPENCV implementation, have encountered difficulties and have a hard time to find the problem.
First of all, to solve this pr
The Edius can be used to edit the layout of various videos, including zooming in and out, rotating the projection, and so on, rotating video is a more common one. In this article, we will share the process of using Edius Pro 8 to rotate the video 90 degrees.The tool used to Edius video rotation is simple, which is the rotation in the video layout.First drag the footage you want to
This article describes how to rotate a bitmap 90 degrees. Add a Timage control to the project named Image1.
It works by creating a bitmap buffer to store the median, converting pixels from each row of the in-place diagram to each column and then storing it in the bitmap buffer we created. Finally, the rotated bitmap is saved back to the in-place diagram from the
Copy codeThe Code is as follows:/*** Modify an image to flip it to a specified degree** @ Param string $ filename file name (including file path)* @ Param float $ degrees rotation degree* @ Return boolean*/Function flip ($ filename, $ src, $ degrees = 90){// Read the image$ Data = @ getimagesize ($ filename );If ($ data = false) return false;// Read the old image
Failure phenomenon:
MIIX3 830 Tablet PC uses QQ with each other to carry on the video, when the portrait position or holds in the hand (the Lenovo logo is on), the opposite party sees the image to rotate to the right 90 degrees.
Reason Analysis:
This problem occurs because Windows
Desktop version of the QQ software video system does not suppo
An image is represented as a nxn matrix. each pixel in the image is 4 bytes. Write a function to rotate the image 90 degrees. Can you perform operations in the same place? (That is, do not open up additional storage space)
The first question is the element of an exchange matrix
#include #include using namespace STD;voidGrial (int(*a) [5],intN) {//Array rotates 90 degrees clockwise. //Boundary value Considerations Let me think for a little bit. intTempintStartX =0;intStarty =0;intj =0; while(StartX 2) {StartX = J; for(inti = j; I 1; i++) {starty = i;//Do not open space, just exchange data can be easily done. temp = A[startx][starty]; A[startx][starty] = A[n-starty-1][STARTX
First design ideas, take 4*4 matrix as an example, it is not difficult to find in fact, if the following the same color row and column exchange, in fact, can achieve the goalIt is not difficult to find that the implementation has the following rules:i = 0j = Ai = 1j = 2, 3I= 2j = 3DATA[I][J] and Data[j][i] can be exchanged, but the exchange will think that there is a third variable to implement the way of exchange, so the implementation code is as fol
First design ideas, take 4*4 matrix as an example, it is not difficult to find in fact, if the following the same color row and column exchange, in fact, can achieve the goalIt is not difficult to find that the implementation has the following rules:i = 0j = Ai = 1j = 2, 3I= 2j = 3DATA[I][J] and Data[j][i] can be exchanged, but the exchange will think that there is a third variable to implement the way of exchange, so the implementation code is as fol
New Feature of ie5.5: rotating text. You can see it later. The usage is as follows:
Obtain the writing method:
Object. style. writingmode
Set the writing mode:
Object. style. writingmode = sflowdir
Where sflowdir is
One of LR-TB or TB-rl
Set Value EffectLR-TB default object direction, that is, the order from left to right, from top to bottomTB-rl objects are arranged from top to bottom and right to left. Chinese characters face up and English characters
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