motion

Detect bad frames in OpenCV 2.4.9

由 一个人想着一个人 提交于 2021-02-18 06:29:05
问题 I know the title is a bit vague but I'm not sure how else to describe it. CentOS with ffmpeg + OpenCV 2.4.9. I'm working on a simple motion detection system which uses a stream from an IP camera (h264). Once in a while the stream hiccups and throws in a "bad frame" (see pic-bad.png link below). The problem is, these frames vary largely from the previous frames and causes a "motion" event to get triggered even though no actual motion occured. The pictures below will explain the problem. Good

Ionic + Capacitor: Motion does not work on device

由 北战南征 提交于 2021-01-29 11:31:14
问题 I have a simple Ionic page that should tap into the Motion plugin of Capacitor and show the orientation of the compass the device. Works fine in the Chrome dev console but not on the device itself - whether accessing the ionic server og via XCode. Code comes here: import {Component} from '@angular/core'; import {MotionOrientationEventResult, PluginListenerHandle, Capacitor} from '@capacitor/core'; const {Motion} = Capacitor.Plugins; @Component({ selector: 'app-home', templateUrl: 'home.page

How to convert quaternion to angle?

由 Deadly 提交于 2021-01-24 12:12:25
问题 Is there a formula to convert a quaternion to an angle? Looking to do something on the iPhone using the Core Motion API and the gyro so that based on data I receive from it (in the form of quaternions) I can project a UIView on the screen. Thanks 回答1: Yes, see Quaternions and spatial rotation. The unit quaternion (w, x, y, z) represents a rotation about the axis (x, y, z) of an angle of 2*cos -1 (w). Note that this is only true of unit quaternions. Non-unit quaternions do not represent

How to change scroll behavior (e.g. speed, acceleration) on website?

由 巧了我就是萌 提交于 2020-12-10 04:17:11
问题 How are the modified scroll behaviors on websites made? I want to accomplish an accelerated scroll behavior as you can see it in the example. So you scroll in a certain speed and after you let go the page scrolls a little more by its own, slows down and stops. Unfortunately I have absolutely no basis to provide you with code, I hope you can still help me. Maybe you can recommend me some js plugins? https://p2mv.studio/case/sony-music-france 回答1: You have 2 ways of achieving this. You can use

Access compass data in Mobile Web / HTML5

由 让人想犯罪 __ 提交于 2020-05-28 05:06:06
问题 I'm making AR Mobile Web App, and my current goal is to show some events on the camera screen. For example, if there is fire in direction north from me, I want to point phone to north, and fire logo should be visible there. My problem is - how can I get the absolute compass data? I've tried this JavaScript code: function compassHeading(alpha, beta, gamma) { var dataContainerMotion = document.getElementById('dataContainerMotion'); // Convert degrees to radians var alphaRad = alpha * (Math.PI /

Android MotionLayout motionStaggered

由 时光总嘲笑我的痴心妄想 提交于 2020-01-24 19:33:06
问题 I am trying to get my views to animate using MotionLayout but want certain Constraints to animate in before others. I think this was the purpose of the motion:staggered property for Transition but I don't understand how that works and there are no examples of it successfully working anywhere. With updated versions of MotionLayout it seems we should have motion:motionStagger for individual Constraints but again I cannot seem to get it to stagger as desired. Only documentation I could find was

raspberry pi motion webcam “premature end of data” [closed]

由 梦想与她 提交于 2020-01-13 03:53:08
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I am trying to get my webcam running on the raspberry pi. I am using a logictech quickcam for notebooks. Via lsusb I see that the device is connected. When i am starting motion I am getting this error "corrupt JPEG data: premature end of data segment". I tried fswebcam as well but I just get black pictures out

continuous loop with divs and jquery

由 旧街凉风 提交于 2020-01-12 10:04:28
问题 I'm continuing a previous post, but I thought I'd open a new thread since it takes a different approach and has more actual code. Anyway, I'm trying to get an infinite loop going with divs scrolling through a window (the other post has an image, and the code below works). <html> <head> <meta http-equiv="Content-type" content="text/html; charset=utf-8"> <title>Bleh...</title> <style type="text/css" media="screen"> body { padding: 0; text-align: center; } #container { width: 1000px; padding:

continuous loop with divs and jquery

由 廉价感情. 提交于 2020-01-12 10:02:49
问题 I'm continuing a previous post, but I thought I'd open a new thread since it takes a different approach and has more actual code. Anyway, I'm trying to get an infinite loop going with divs scrolling through a window (the other post has an image, and the code below works). <html> <head> <meta http-equiv="Content-type" content="text/html; charset=utf-8"> <title>Bleh...</title> <style type="text/css" media="screen"> body { padding: 0; text-align: center; } #container { width: 1000px; padding:

continuous loop with divs and jquery

由 ぐ巨炮叔叔 提交于 2020-01-12 10:02:16
问题 I'm continuing a previous post, but I thought I'd open a new thread since it takes a different approach and has more actual code. Anyway, I'm trying to get an infinite loop going with divs scrolling through a window (the other post has an image, and the code below works). <html> <head> <meta http-equiv="Content-type" content="text/html; charset=utf-8"> <title>Bleh...</title> <style type="text/css" media="screen"> body { padding: 0; text-align: center; } #container { width: 1000px; padding:
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