Method for separating video camera motion from scene motion for constrained 3D displacement measurements

التفاصيل البيبلوغرافية
العنوان: Method for separating video camera motion from scene motion for constrained 3D displacement measurements
المؤلفون: L. R. Gauthier, M. E. Jansen, J. R. Meyer
المصدر: SPIE Proceedings.
بيانات النشر: SPIE, 2014.
سنة النشر: 2014
مصطلحات موضوعية: Motion compensation, Pixel, business.industry, Computer science, Camera matrix, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Optical flow, Video camera, law.invention, Match moving, Motion field, law, Camera auto-calibration, Computer graphics (images), Motion estimation, Pinhole camera model, Computer vision, Artificial intelligence, Three-CCD camera, business, Stereo camera, ComputingMethodologies_COMPUTERGRAPHICS, Camera resectioning
الوصف: Camera motion is a potential problem when a video camera is used to perform dynamic displacement measurements. If the scene camera moves at the wrong time, the apparent motion of the object under study can easily be confused with the real motion of the object. In some cases, it is practically impossible to prevent camera motion, as for instance, when a camera is used outdoors in windy conditions. A method to address this challenge is described that provides an objective means to measure the displacement of an object of interest in the scene, even when the camera itself is moving in an unpredictable fashion at the same time. The main idea is to synchronously measure the motion of the camera and to use those data ex post facto to subtract out the apparent motion in the scene that is caused by the camera motion. The motion of the scene camera is measured by using a reference camera that is rigidly attached to the scene camera and oriented towards a stationary reference object. For instance, this reference object may be on the ground, which is known to be stationary. It is necessary to calibrate the reference camera by simultaneously measuring the scene images and the reference images at times when it is known that the scene object is stationary and the camera is moving. These data are used to map camera movement data to apparent scene movement data in pixel space and subsequently used to remove the camera movement from the scene measurements.
تدمد: 0277-786X
DOI: 10.1117/12.2064070
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::db8edd50bdda14a33ac812f640bad44c
https://doi.org/10.1117/12.2064070
رقم الانضمام: edsair.doi...........db8edd50bdda14a33ac812f640bad44c
قاعدة البيانات: OpenAIRE
الوصف
تدمد:0277786X
DOI:10.1117/12.2064070