Method for removing operator reaction time error from time-sensitive tasks
Publication Date: 2014-Aug-13
The IP.com Prior Art Database
A method for removing operator reaction time error from time-sensitive tasks is disclosed.
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Method for removing operator reaction time error from time -sensitive tasks
Disclosed is a method for removing operator reaction time error from time-sensitive tasks.
User interactions with systems that attempt to capture, mark or locate specific temporal events can be challenging when the events occur at a rapid rate. The problem can be understood by the following familiar scenario depicted in Figure 1:
A photographer is attempting to take a portrait photo. The photographer readies the subject. At
the proper moment (engaging smile, cute look, etc.), the photographer depresses the shutter button only to find that the subject has moved, blinked, or otherwise ceased to be photogenic. A photographer attempts to capture a dramatic action during a sporting event, only to find the
action has passed.
A user wants to locate a specific scene in a video. The user fast forwards the video watching for
cues that the scene is approaching. The Stop (or Play) button is hit, and the user discovers the scene is overshot. The user again rewinds the video watching the scenes in reverse. The scene is overshot again, this time by a smaller amount. Eventually the target scene is correctly targeted.
Difficulties arise because of human response time. The mental processing of deciding to act, preparing a response, and making a physical movement take time, ranging from hundreds to thousands of milliseconds depending on the complexity of the cognitive and motor operations involved. And while the human is responding, events occur too quickly for an optimal experience, requiring rework, extra cognitive effort in preparing to respond, and so forth.
Prior art -some cameras make their own decisions based on smiles and open eyes. They can do this faster than a human; however, do not address applications other than portraiture. Some cameras perform burst shooting in which multiple images are captured in rapid succession.
Some video systems use a wheel control for rapidly changing the rate and direction of a video playback. Because the user can readily slow down the playback or reverse direction this makes it easier to locate a target scene or frame. However it doesn't completely solve the problem because
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users still tend to overshoot even with this type of control device.
Disclosed is a method that can be used to monitor and/or estimate the reaction time of the user and correct for it. The user watches events stream by, decides where to snapshot and makes a response. The system marks the point of the response, estimates the response time required and indexes back to the point in time w...