motion-detection

问题 I am trying to track the movement of the device only on the vertical direction, i.e. upward and downward movement. This should be irrespective of the orientation of the device. Things that i already know or have tried are these Linear acceleration is given by sensor TYPE_LINEAR_ACCELERATION and the axes is the phone axes and hence tracking any particular axes does not make a difference. I tried applying transpose or inverse of rotation vector( inverse or transpose for the rotation vector are

问题 I am trying to track the movement of the device only on the vertical direction, i.e. upward and downward movement. This should be irrespective of the orientation of the device. Things that i already know or have tried are these Linear acceleration is given by sensor TYPE_LINEAR_ACCELERATION and the axes is the phone axes and hence tracking any particular axes does not make a difference. I tried applying transpose or inverse of rotation vector( inverse or transpose for the rotation vector are

问题 I am building an Android game and I want to figure out whether the user tilts the device to the left or the right (Similar to how Temple Run works when you move the man from side to side). I have read many tutorials and examples and I made sample applications but the amount of data I get back from both the Gyroscope and the Accelerometer are overwhelming. Would I need both sets of hardware to work out whether the user tilts the device and in which direction? My current application is

问题 I am building an Android game and I want to figure out whether the user tilts the device to the left or the right (Similar to how Temple Run works when you move the man from side to side). I have read many tutorials and examples and I made sample applications but the amount of data I get back from both the Gyroscope and the Accelerometer are overwhelming. Would I need both sets of hardware to work out whether the user tilts the device and in which direction? My current application is

来源： https://stackoverflow.com/questions/17625712/motion-detection

问题 I would like to know whether it is possible to write code that would let you know whether the user is walking or not (with their iphone tucked in their pocket) and towards which direction they are walking. More specifically : I'm not interested in calculating distance travelled I'm not interested in counting steps, etc. What I'm interested in is detecting movement and immobility, distinguishing between the two, and also distinguishing between forward and backward movement. I know that with

问题 I am currently working on a Windows.Forms application. It's basically a simple motion detection problem. I have a button on a form, that when pressed launches a background worker that does the following : Fetch an image from disk Create a new bitmap, to be used as the buffer. Perform Motion Detection From the results of Motion Detection, update the buffer (using the buffer's drawing surface) Fire the Progress Changed Event with an argument consisting of a clone of the buffer, basically

问题 Is there a simple way to track the motions of a single entity in a webcam feed? For example, I imagine a "hello world" app with an index finger used as mouse pointer. I realize there's still a lot of basic research in this area, so it might be too early to expect an easy to use, generic abstraction. For the sake of completeness, I've seen some related but lower-level (and non-Python) projects being mentioned, including AForge, WiimoteLib and an article on motion detection algorithms. 回答1: You

问题 Is there a simple way to track the motions of a single entity in a webcam feed? For example, I imagine a "hello world" app with an index finger used as mouse pointer. I realize there's still a lot of basic research in this area, so it might be too early to expect an easy to use, generic abstraction. For the sake of completeness, I've seen some related but lower-level (and non-Python) projects being mentioned, including AForge, WiimoteLib and an article on motion detection algorithms. 回答1: You

问题 I'm trying to modify the motion detection part of FFMPEG. What I want to do is to extend the search space, so that whenever the macroblock hit the right most edge of the frame, I need it to still move the block towards the left-most as if they are connected (in my example videos, the right edge is actually a continue of the left edge). Can someone help me to point where exactly I can modify it within FFMPEG source code or x265, or x264? I took H265 as an example from here . It has a motion