motion

Moving an image from A to B with JavaScript

由 。_饼干妹妹 提交于 2019-12-10 14:05:23
问题 Its my first time here and I don't know how to indent this sorry :/ I have an image of a van and I am trying to move it across the screen to as if it is driving. Once that is done I will scale the image to appear as if it is moving away (and getting smaller). I need this to be done in standard javascript without any packages (such as JQuery) please. What I've got is a van which for a reason I can't break down is moving along 2 paths instead of one. Also moving in the wrong direction (it

How to connect leap-motion , directly to android

由 拜拜、爱过 提交于 2019-12-10 09:36:42
问题 i am working on an android application that requires to be controlled by LEAP-motion. the leap sdk currently only supports windows and mac. but is there a way (any open library/tutorial etc.) to make the leap motion device talk to an android phone? leap motion uses a USB connection to the phone , i have a usb OTG adapter and can directly plug in leap. Any sort of help will be greatly appreciated. 回答1: Introduction Ya, I know your question contains the word "directly". My solution is not

Determining if a feature is part of a moving object from sparse optical flow (KLT)

由 你。 提交于 2019-12-08 03:17:13
问题 I have done extracting optical flow from a sequence of images using KLT. The camera is on a moving vehicle capturing traffic scene. Now, I can obtain the matching results with no mismatched points. I just use the OpenCV functions (C++) to extract features and tracking. I have no problem with programming though. cvGoodFeaturesToTrack(), cvFindCornerSubPix(), cvCalcOpticalFlowPyrLK() Can anybody suggest what topic/paper should I look into to distinguish if the matched points I have are part of

2D motion estimation using Python, OpenCV & Kalman filtering

由 僤鯓⒐⒋嵵緔 提交于 2019-12-06 12:00:55
问题 I have a set of images, and would like to recursively predict where a bunch of pixels will be in the next image. I am using Python, OpenCV, and believe Kalman filtering may be the way forward, but am struggling on the implementation. For simplicity, the code below opens and image and extracts just one colour channel, in this case the red one. So far, I am using optical flow to determine the motion between images in X and Y for each pixel. After each iteration, I would like to use the last N

Motion to last character

由 故事扮演 提交于 2019-12-06 02:13:55
问题 Is there a motion to move to the last of a character? Example: [A]pple -> move to last p -> Ap[p]le I can do that with 2fp but if there's lots of "p"s in the line then it's not so easy to count them then do 10fp 回答1: My JumpToLastOccurrence plugin extends the built-in f / F / t / T motions with counterparts (by default bound to ,f etc.) that move to the last occurrence of {char} in the line. 回答2: $Fp $ jumps to the end of the line, F jumps backwards to the character p . This does not work if

Android MotionEvent.getActionIndex() and MultiTouch

由 ⅰ亾dé卋堺 提交于 2019-12-05 18:42:23
I am trying to get the pointer id whene the event MotionEvent.ACTION_MOVE happens. I am doing it by calling event.getActionIndex() but it always returns 0 for the second, the third, the forth and the fifth finger. i am using Gingerbread 2.3.3 on Galaxy S I9000 here is my code switch (event.getActionMasked()) { case MotionEvent.ACTION_MOVE: { Log.d("D"," getActionIndex()="+event.getActionIndex()); };break; } This is the debug results 05-02 19:20:08.628: DEBUG/D(4534): getActionIndex()=0 getPointerCount()=1 05-02 19:20:08.781: DEBUG/D(4534): getActionIndex()=0 getPointerCount()=1 05-02 19:20:08

2D motion estimation using Python, OpenCV & Kalman filtering

由 安稳与你 提交于 2019-12-04 16:34:17
I have a set of images, and would like to recursively predict where a bunch of pixels will be in the next image. I am using Python, OpenCV, and believe Kalman filtering may be the way forward, but am struggling on the implementation. For simplicity, the code below opens and image and extracts just one colour channel, in this case the red one. So far, I am using optical flow to determine the motion between images in X and Y for each pixel. After each iteration, I would like to use the last N iterations, and by using the X/Y motions found each time, calculate the velocity of the pixel, and

iOS Motion Detection: Motion Detection Sensitivity Levels

由 放肆的年华 提交于 2019-12-04 09:14:13
问题 I have a simple question. I'm trying to detect when a user shakes the iPhone. I have the standard code in place to detect the motion and this works no problem. However, in testing this on my actual phone, I've realized that you have to shake the device quite hard to get the motion detection to trigger. I would like to know if there is a way to implement a level of sensitivity checking. For example, a way to detect if a user lightly shakes the device or somewhere between light and hard shake.

HTML5 Canvas Motion Blur effect?

由 拜拜、爱过 提交于 2019-12-04 03:47:42
问题 I'm trying to use HTML5 canvas to make something like a motion blur effect and no success. Basically what I'm trying to do is to take a photo and make it look like "fast forwarded", like when you take a picture and the person moved. 回答1: There are several libraries for canvas that have implemented various blurring algorithms. EaselJS has implemented x- and y-axis blurring independently, as you can see in this sample. All you might want is a x-axis blur from their libray. 回答2: I got here with

detecting motion on opencv c++ (moving camera)

由 纵然是瞬间 提交于 2019-12-03 14:28:11
I'm doing a project for the university and I'm working with OpenCV (that is really awesome). Now my problem is: I have a video (.avi) and I have detected all the information I want to know about the blobs that suddenly appear in the RGB range between red and yellow. After I have realized a matrix that saves all the information about the pixel values, finally I create an image in the scale of red that represents the median pixel values. The real problem is that the video is not static and the camera moves (not too much but it moves). Can I calculate the x and y coordinates of the camera motion
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