Character readers are those devices which read the characters printed on the source documents and then convert them directly into computer-usable input. Which of the following is not a character reader?
Character readers are those devices which read the characters printed on the source documents and then convert them directly into computer-usable input. Which of the following is not a character reader?
The correct option is A LCD
Character readers are
those devices which read the characters printed on the source documents and
then convert them directly into computer-usable input. LCD is not a character
reader.
Modern household appliances,
such as microwave ovens and DVD players, increasingly require users to read an
LED or LCD display to operate them, posing a severe obstacle for persons with
blindness or visual impairment. While OCR-enabled devices are emerging to
address the related problem of reading text in printed documents, they are not
designed to tackle the challenge of finding and reading characters in appliance
displays. Any system for reading these characters must address the challenge of
first locating the characters among substantial amounts of background clutter;
moreover, poor contrast and the abundance of specular highlights on the display
surface - which degrade the image in an unpredictable way as the camera is
moved - motivate the need for a system that processes images at a few frames
per second, rather than forcing the user to take several photos, each of which
can take seconds to acquire and process, until one is readable. We describe a
novel system that acquires video, detects and reads LED/LCD characters in real time,
reading them aloud to the user with synthesized speech. The system has been
implemented on both a desktop and a cell phone. Experimental results are
reported on videos of display images, demonstrating the feasibility of the
system.
Character readers are those devices which read the characters printed on the source documents and then convert them directly into computer-usable input. LCD is not a character reader.
Modern household appliances, such as microwave ovens and DVD players, increasingly require users to read an LED or LCD display to operate them, posing a severe obstacle for persons with blindness or visual impairment. While OCR-enabled devices are emerging to address the related problem of reading text in printed documents, they are not designed to tackle the challenge of finding and reading characters in appliance displays. Any system for reading these characters must address the challenge of first locating the characters among substantial amounts of background clutter; moreover, poor contrast and the abundance of specular highlights on the display surface - which degrade the image in an unpredictable way as the camera is moved - motivate the need for a system that processes images at a few frames per second, rather than forcing the user to take several photos, each of which can take seconds to acquire and process, until one is readable. We describe a novel system that acquires video, detects and reads LED/LCD characters in real time, reading them aloud to the user with synthesized speech. The system has been implemented on both a desktop and a cell phone. Experimental results are reported on videos of display images, demonstrating the feasibility of the system.
