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What are the advantages and disadvantages of using facial expressions when communicating?
Wiki User
∙ 13y ago
Advantages:
- People see your emotion by your facial expression.
- Can show if you are happy/sad, satisfied/unsatisfied, angry/pleased etc without saying a word or while other is talking with you.
- It can make you know if the conversation is boring or interesting by the people's face expression.
Disadvantages:
- Someone can feel offended or insulted if you made a negative face expression.
Wiki User
∙ 13y ago
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What are the advantages and disadvantages of face recognition system?
A facial recognition system is a computer application or device that can identify individuals based on their unique facial characteristics. Unlike many other identification methods (e.g., fingerprints, voiceprint, signature), they do not need to make direct contact with an individual in order to verify their identity. This can be advantageous in clean environments, for surveillance or tracking, and in automation systems. Because the system keeps a reference model of the individual, and captures their image for identification, there may be concerns about how the system is perceived by its users. They may also be more error-prone when identifying individuals, due to the fairly recent development of the technology. In addition, if used for security purposes, it is considerably more expensive and complex than other methods, such as mechanical locks, passwords, or identification cards.
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"Identix®, a company based in Minnesota, is one of many developers of facial recognition technology. Its software, FaceIt®, can pick someone's face out of a crowd, extract the face from the rest of the scene and compare it to a database of stored images. In order for this software to work, it has to know how to differentiate between a basic face and the rest of the background. Facial recognition software is based on the ability to recognize a face and then measure the various features of the face. Every face has numerous, distinguishable landmarks, the different peaks and valleys that make up facial features. FaceIt defines these landmarks as nodal points. Each human face has approximately 80 nodal points. Some of these measured by the software are: * Distance between the eyes * Width of the nose * Depth of the eye sockets * The shape of the cheekbones * The length of the jaw line These nodal points are measured creating a numerical code, called a faceprint, representing the face in the database.In the past, facial recognition software has relied on a 2D image to compare or identify another 2D image from the database. To be effective and accurate, the image captured needed to be of a face that was looking almost directly at the camera, with little variance of light or facial expression from the image in the database. This created quite a problem."--How Stuff Works
How was the task of computer performs accomplished before computers?
These days computers (and the internet) give us access to people from around the world, and let us filter them according to our interests. We can have text-only conversations with someone a thousand miles away in an instant, although we sacrifice all the other parts of a conversational relationship that make us able to communicate and be happy in return, like facial expressions, vocal tones, body language, disputes, resolutions to those disputes, and the increasing ability to like what life gives you. Before that, the only people you could talk to were those within a couple miles from your house, and a visit usually had to be planned ahead of time. The best way to stay close to people who lived more than two miles away was to go to church, or some other group event or meeting that drew in people from around the area. People had to deal with whatever people were around them, learning how to give and take. Some people hypothesize that the recent increase in teenage depression may stem from the fact that they have no real friends, only virtual friends behind false names who they could never really get to know.
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Why were facial expressions unimportant?
she rATCHET
