image-rotation

问题 How can I flip/rotate the label in C# Windows Forms? I set the background image to my label. At every time interval it moves three pixels to the right side. When it reaches the form end position I need the label to be flipped and turned back. I have tried the following way, but I didn't get the solution. private void timer1_Tick(object sender, EventArgs e){ if (label2.Location.X < this.Width) label2.Location = new Point(label2.Location.X + incr, label2.Location.Y); else { incr = -2; label2

问题 I have an n x n x n numpy array that contains density values on a cubic grid. I'm trying to align the principal axes of inertia of the density map with the cartesian x,y,z axes of the grid. I have the following so far: import numpy as np from scipy import ndimage def center_rho(rho): """Move density map so its center of mass aligns with the center of the grid""" rhocom = np.array(ndimage.measurements.center_of_mass(rho)) gridcenter = np.array(rho.shape)/2. shift = gridcenter-rhocom rho =

问题 I have an n x n x n numpy array that contains density values on a cubic grid. I'm trying to align the principal axes of inertia of the density map with the cartesian x,y,z axes of the grid. I have the following so far: import numpy as np from scipy import ndimage def center_rho(rho): """Move density map so its center of mass aligns with the center of the grid""" rhocom = np.array(ndimage.measurements.center_of_mass(rho)) gridcenter = np.array(rho.shape)/2. shift = gridcenter-rhocom rho =

问题 Background I know it's possible to create a rotated version of a Drawable (or Bitmap), as such (written about it here) : @JvmStatic fun getRotateDrawable(d: Drawable, angle: Int): Drawable { if (angle % 360 == 0) return d return object : LayerDrawable(arrayOf(d)) { override fun draw(canvas: Canvas) { canvas.save() canvas.rotate(angle.toFloat(), (d.bounds.width() / 2).toFloat(), (d.bounds.height() / 2).toFloat()) super.draw(canvas) canvas.restore() } } } The problem I wanted to have

问题 Background I know it's possible to create a rotated version of a Drawable (or Bitmap), as such (written about it here) : @JvmStatic fun getRotateDrawable(d: Drawable, angle: Int): Drawable { if (angle % 360 == 0) return d return object : LayerDrawable(arrayOf(d)) { override fun draw(canvas: Canvas) { canvas.save() canvas.rotate(angle.toFloat(), (d.bounds.width() / 2).toFloat(), (d.bounds.height() / 2).toFloat()) super.draw(canvas) canvas.restore() } } } The problem I wanted to have

问题 Hello I want to ratate image with only using trigonometric functions. Assume "q" as a "theta" y'=x*sin(q) + y(-tan(q/2))*sin(q)+y x'=x+2 y (-tan(q/2)) + x sin(q) (-tan^2(q/2)) + y x' and y' is going to be our new x and y values. I am quite new in image proccesiing but i wrote a code which i think is kind of right. In this example "theta" is considered "30 degrees" but i will develop the code and it will work for any other degrees... So basically, I want from u to find my misake or if the code

问题 I am trying to rotate a JPEG image in C++ using libjpeg v9 based on the "Orientation" parameter present in EXIF metadata. I am able to get the "Orientation" parameter and on its basis, i am also able to rotate image into another file so that rotated image corresponds to "Orientation" value 1. See code, which i have taken from "jpegtran.c" file and working fine(reading EXIF metadata code is not present): #include <iostream> #include <jpeglib.h> #include <jerror.h> #include "transupp.h" void

问题 I am trying to rotate a JPEG image in C++ using libjpeg v9 based on the "Orientation" parameter present in EXIF metadata. I am able to get the "Orientation" parameter and on its basis, i am also able to rotate image into another file so that rotated image corresponds to "Orientation" value 1. See code, which i have taken from "jpegtran.c" file and working fine(reading EXIF metadata code is not present): #include <iostream> #include <jpeglib.h> #include <jerror.h> #include "transupp.h" void

问题 I am trying to rotate a JPEG image in C++ using libjpeg v9 based on the "Orientation" parameter present in EXIF metadata. I am able to get the "Orientation" parameter and on its basis, i am also able to rotate image into another file so that rotated image corresponds to "Orientation" value 1. See code, which i have taken from "jpegtran.c" file and working fine(reading EXIF metadata code is not present): #include <iostream> #include <jpeglib.h> #include <jerror.h> #include "transupp.h" void

来源： https://stackoverflow.com/questions/64692126/rotating-image-with-trigonometric-functions-and-image-padding