Rapid technical advances in the field of computeropened new avenues in animal behavior research.animation （CA） and virtual reality （VR） haveAnimated stimuli are powerful tools as theyoffer standardization, repeata...Rapid technical advances in the field of computeropened new avenues in animal behavior research.animation （CA） and virtual reality （VR） haveAnimated stimuli are powerful tools as theyoffer standardization, repeatability, and complete control over the stimulus presented, thereby＂reducing＂ and ＂replacing＂ the animals used, and ＂refining＂ the experimental design in line withthe 3Rs. However, appropriate use of these technologies raises conceptual and technical questions.In this review, we offer guidelines for common technical and conceptual considerations related tothe use of animated stimuli in animal behavior research. Following the steps required to create ananimated stimulus, we discuss （I） the creation, （11） the presentation, and （111） the validation of CAsand VRs. Although our review is geared toward computer-graphically designed stimuli, consider-ations on presentation and validation also apply to video playbacks. CA and VR allow both new be-havioral questions to be addressed and existing questions to be addressed in new ways, thus weexpect a rich future for these methods in both ultimate and proximate studies of animal behavior.展开更多
Sports video appeals to large audiences due to its high commercial potentials. Automatically extracting useful semantic information and generating highlight summary from sports video to facilitate users' accessing...Sports video appeals to large audiences due to its high commercial potentials. Automatically extracting useful semantic information and generating highlight summary from sports video to facilitate users' accessing requirements is an important problem, especially in the forthcoming broadband mobile communication and the need for users to access their multimedia information of interest from anywhere at anytime with their most convenient digital equipments. A system to generate highlight summaries oriented for mobile applications is introduced, which includes highlight extraction and video adaptation. In this system, several highlight extraction techniques are provided for field sports video and racket sports video by using multi-modal information. To enhance users' viewing experience and save bandwidth, 3D animation from highlight segment is also generated. As an important procedure to make video analysis results universally applicable, video transcoding techniques are applied to adapt the video for mobile communication environment and user preference. Experimental results are encouraging and show the advantage and feasibility of the system for multimedia content personalization, enhancement and adaptation to meet different user preference and network/device requirements.展开更多
Artifice--the manipulation of social and environmental stimuli--is fundamental to research in ani-mal behavior. State-of-the-art techniques have been developed to generate and present complexvisual stimuli. These tech...Artifice--the manipulation of social and environmental stimuli--is fundamental to research in ani-mal behavior. State-of-the-art techniques have been developed to generate and present complexvisual stimuli. These techniques have unique strengths and limitations. However, many of theissues with synthetic animation and virtual reality are common to playback experiments in general,including those using unmanipulated video or auditory stimuli. Playback experiments, in turn, fallinto the broader category of experiments that artificially manipulate the array of stimuli experi-enced by a subject. We argue that the challenges of designing and interpreting experiments usingvirtual reality or synthetic animations are largely comparable to those of studies using oldertechnologies or addressing other modalities, and that technology alone is unlikely to solve thesechallenges. We suggest that appropriate experimental designs are the key to validating behavioralresponses to artificial stimuli and to interpreting all studies using artifice, including those that pre-sent complex visual displays.展开更多
文摘Rapid technical advances in the field of computeropened new avenues in animal behavior research.animation （CA） and virtual reality （VR） haveAnimated stimuli are powerful tools as theyoffer standardization, repeatability, and complete control over the stimulus presented, thereby＂reducing＂ and ＂replacing＂ the animals used, and ＂refining＂ the experimental design in line withthe 3Rs. However, appropriate use of these technologies raises conceptual and technical questions.In this review, we offer guidelines for common technical and conceptual considerations related tothe use of animated stimuli in animal behavior research. Following the steps required to create ananimated stimulus, we discuss （I） the creation, （11） the presentation, and （111） the validation of CAsand VRs. Although our review is geared toward computer-graphically designed stimuli, consider-ations on presentation and validation also apply to video playbacks. CA and VR allow both new be-havioral questions to be addressed and existing questions to be addressed in new ways, thus weexpect a rich future for these methods in both ultimate and proximate studies of animal behavior.
基金Project supported by NEC Research of China (No. 0P2004001),"Science 100 Plan" of the Chinese Academy of Sciences (No. m2041),and the Natural Science Foundation (No. 4063041) of Beijing, China
文摘Sports video appeals to large audiences due to its high commercial potentials. Automatically extracting useful semantic information and generating highlight summary from sports video to facilitate users' accessing requirements is an important problem, especially in the forthcoming broadband mobile communication and the need for users to access their multimedia information of interest from anywhere at anytime with their most convenient digital equipments. A system to generate highlight summaries oriented for mobile applications is introduced, which includes highlight extraction and video adaptation. In this system, several highlight extraction techniques are provided for field sports video and racket sports video by using multi-modal information. To enhance users' viewing experience and save bandwidth, 3D animation from highlight segment is also generated. As an important procedure to make video analysis results universally applicable, video transcoding techniques are applied to adapt the video for mobile communication environment and user preference. Experimental results are encouraging and show the advantage and feasibility of the system for multimedia content personalization, enhancement and adaptation to meet different user preference and network/device requirements.
文摘Artifice--the manipulation of social and environmental stimuli--is fundamental to research in ani-mal behavior. State-of-the-art techniques have been developed to generate and present complexvisual stimuli. These techniques have unique strengths and limitations. However, many of theissues with synthetic animation and virtual reality are common to playback experiments in general,including those using unmanipulated video or auditory stimuli. Playback experiments, in turn, fallinto the broader category of experiments that artificially manipulate the array of stimuli experi-enced by a subject. We argue that the challenges of designing and interpreting experiments usingvirtual reality or synthetic animations are largely comparable to those of studies using oldertechnologies or addressing other modalities, and that technology alone is unlikely to solve thesechallenges. We suggest that appropriate experimental designs are the key to validating behavioralresponses to artificial stimuli and to interpreting all studies using artifice, including those that pre-sent complex visual displays.
