The geometric transformation of an image is the spatial geometric transformation of the image pixels without changing the image content. It mainly includes the translation transformation, image transformation, scaling and rotation of the image. This article first introduces some basic concepts of image geometric transformation, and then implements image translation transformation, image transformation, scaling, and
Image Rotation Algorithm
Cndg
Image rotation is to convert the New and Old Coordinates and linear interpolation between pixels. Because the coordinate values are converted using multiplication, this article uses addition to replace multiplication to solve the speed problem.
The Code is as follows:
// Function: Image Rotation
// Parameter description: isrc, indica
Recent projects in the face of a Samsung phone photos, the picture will automatically rotate, should be the function of the Samsung internal system, and then need to do not let him rotate, found the method.The principle is to get to the picture, judge its rotation angle, and then rotate back accordingly.In the return result of the photo, get the path to the picture.Path = FilePath + fileName; Path is the route returned by the photoFile File = new file
Private Orientationeventlistener Morientationlistener; Private String TAG = "mainactivity"; private int screencurorient = 2; 1 indicates a vertical screen, 2 indicates a positive horizontal screen, 3 is a reverse vertical screen, 4 indicates a reverse horizontal private final void Startorientationchangelistener () {morientationlistener = new O Rientationeventlistener (This) {@Override public void onorientationchanged (int rotation) {
Title: Move a number of elements at the beginning of an array to the end of the array, which we call the rotation of the array. Enter a rotation of a non-descending sorted array, outputting the smallest element of the rotated array.For example, the array {3,4,5,1,2} is a rotation of {1,2,3,4,5}, and the minimum value of the array is 1. Note: All elements given ar
Recently do the service number development, in the picture to show the need to monitor the screen to achieve a different picture size display.Add a screen rotation event to listen to the screen rotation status (left, right, or not) at any time.Excerpt from: http://bbs.phonegap100.com/thread-28-1-1.htmlJS to determine if the screen is rotated4. Screen Rotation eve
Effect preview: Ps:1, yesterday with 3 Div realized Taiji figure (click to see),today try to use 1 div to do.2, the company just busy double 10 anniversary, recently idle down, idle is also idle, have to write something.3, Master Mo Spray, the younger brother just is nothing to toss a bit, do a record.4, there are netizens reaction rotation when the card.5, IE browser, go out left, walk not send ~ ~ ~Implementation steps:Html:class="Box-taiji">Step O
When you rotate an image in Photoshop (this refers to a 90-degree rotation of the clock or counter clock), there is no problem if your image's length and width are odd or even. But when your image is only odd on one side, you get an unexpected result, as in the following figure:
Small series recommend: how to maintain the perfect pixel in Photoshop
To get a clearer picture of what's going on, we take a 3x4 pixel graph, it can be found th
Pure CSS3 3D cube module, mouse touch, module exploded, large cubes in a small set of cubes as follows: The code is as follows:
1. Pure CSS3 realize 3D picture cube rotation animation effect
Introduction: This article describes the pure CSS3 implementation of 3D picture cube rotation animation effects, there is a certain reference value, below we look together
2. Pure CSS3 realize 3D cube
The rotation model is often encountered, we can rotate a view before using cabasicanimation, in fact it can also rotate a scnnode.First we must understand a concept, each scnnode has its own three-dimensional coordinate system, with cabasicanimation is to let Scnnode around its three-dimensional axis rotation, so pay special attention to is the axis, not this scnnode geometric center. The coordinate system
Accelerometers are the basis for the entire iOS screen rotation, depending on the accelerometer. The device is capable of inferring the current device orientation, and the iOS system defines the following seven device orientations:typedef ns_enum (Nsinteger, uideviceorientation) {Uideviceorientationunknown,Uideviceorientationportrait,//Device oriented vertically, home button on the bottomUideviceorientationportraitupsidedown,//Device oriented vertical
Reprinted please indicate the source
Author: Pony
Recently, a screen rotation test on WinCE was conducted. my implementation is an application based on WinCE. There is a button in the display area. Every time you press this button, the screen will rotate for 90 degrees. I have been calling this stuff for three days. I encountered many problems and finally succeeded. The most important thing is that I have a deeper understanding of the display driver
1 Preface
Create a UIRotationGestureRecognizer monitor and bind it to your view to capture the gesture that the user uses his fingers to rotate on the screen. The UIRotationGestureRecognizer class has a rotation attribute, which can be used to set the orientation of rotation and the arc degree of rotation. When the user's hands start and end, the two properties,
is selected, it should also be carefully selected. It is designed for a specific requirement, and there are usually not many opportunities for re-layout.
So here we will only discuss the two windows, three windows, and four windows. The four window modes (that is, the dashboard) have the characteristics of axial symmetry and center symmetry at the same time, so there is no need to rotate. In this way, we need to discuss only two windows and three windows.
Two-window
[Unity3D] Unity3D game development: 3D item display by mouse rotation and scaling; unity3d Game Development
Dear friends, I am Qin Yuanpei. Welcome to follow my blog. My blog address is blog.csdn.net/qinyuanpei. Recently, bloggers have focused on camera rotation, scaling, and other issues. Today we will share with you a feature that is commonly used in 3D presentations, that is, right-click the mouse to ach
Tag: use RAC Blank local its NIM not right-click visibleJust getting started u3d, but also a lot of things do not understand, the first contact is to try to get the keyboard of getpress and other events itThe official API Doc is also a lot of help, absorbing all the bloggers of the article also benefited from ~Then again, the recent problem is how to create a new camera and use the mouse to look around the scene, try to find transform. Rotate not be able to implement this event well(ps:z Axis wi
In a special scenario, special handling is required for screen rotation. It is also convenient to implement the relevant functions under the iOS system.Here are two ways to do this:1. Register Uiapplicationdidchangestatusbarorientationnotification Notification (example: registering the notification in a viewdidload of a Viewcontroller Class), the sample code is as follows:[[nsnotificationcenterdefaultcenter] addobserver:self selector: @selector (sta
chrysanthemum rotation. 2. The code implementation idea breaks down this animation. There are five steps. First, we use a diagram to illustrate: 2.1 first defines the element container and defines the position of each line. 2.2 because the transparency of each line is inconsistent during rotation, a single line should be divided into two blocks. 2.3 use the rotate method of CSS to rotate the line. The degr
Displays the menu item on Actionbar, where a refresh button is displayed to simulate the addition of a refresh animation when the action is refreshedMenu layoutMenu.xmlMenuxmlns:android= "Http://schemas.android.com/apk/res/android" > ItemAndroid:id= "@+id/action_stop"android:orderincategory= "+"android:showasaction= "Always"Android:title= "@string/action_stop"/> ItemAndroid:id= "@+id/action_refresh"android:orderincategory= "+"android:showasaction= "Always"Android:icon= "@drawable/ic_action
Circlr is a jQuery plug-in that allows you to rotate and display product images in an all-round way at 360 degrees. This article will share with you a 360 degree rotation of product images based on the jQueryCirclr plug-in. Let's take a look.
Circlr is a jQuery plug-in that allows you to rotate and display product images in an all-round way at 360 degrees. Circlr uses a product image taken at a certain angle to produce a frame-by-frame
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