Identifying character information in media content
First Claim
Patent Images
1. A method comprising:
- recognizing at least one character of frame identification information in a frame of media content;
comparing the at least one character against a set of known characters in a character recognition library;
finding at least one known character from the set of known characters which best matches the at least one character;
identifying the at least one known character as a frame identifier for the frame of media content;
calculating a quality of resolution of the at least one character based on a degree of similarity between the at least one character and the at least one known character; and
estimating a quality of resolution of the frame of media content based on the quality of resolution of the at least one character.
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Abstract
Implementations of identifying character information in media content are described. In one implementation, a frame of media content is marked with a frame identifier including one or more known characters. These known characters can uniquely identify the frame of media content. During transmission, compression, decompression, etc., of the frame, loss can occur. This loss can affect a quality of presentation of one or more of the known characters in the frame identifier. Therefore, when the frame is subsequently examined, the frame identifier can be identified, and best matches of known characters from a character recognition library can be found for characters in the frame identifier.
11 Citations
16 Claims
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1. A method comprising:
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recognizing at least one character of frame identification information in a frame of media content; comparing the at least one character against a set of known characters in a character recognition library; finding at least one known character from the set of known characters which best matches the at least one character; identifying the at least one known character as a frame identifier for the frame of media content; calculating a quality of resolution of the at least one character based on a degree of similarity between the at least one character and the at least one known character; and estimating a quality of resolution of the frame of media content based on the quality of resolution of the at least one character. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tangible computer-readable storage medium having computer-readable instructions residing thereon that, when executed, perform acts comprising:
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locating frame identification information in a frame of media content; estimating a frame identifier having one or more known characters by recognizing one or more characters in the frame identification information, and finding a best match between the one or more characters and a set of known characters in a character recognition library; determining a second frame identifier for a second frame of media content rendered immediately proximate to the frame of media content; and ascertaining that one or more frames of media content have been dropped if the second frame identifier is not immediately proximate in sequence to the frame identifier. - View Dependent Claims (9, 10, 11)
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12. A computing-based device comprising:
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a processor; a memory including a quality sampling module comprising; a character recognition module configured to; recognize frame identification information including one or more characters in a frame of media content; and identify a frame identifier including one or more known characters from among a set of known characters in a character representation library, wherein the one or more known characters are a best match between the one or more characters in the frame identification information and the set of known characters; and a resolution quality module configured to; compute a quality of resolution of the frame identification information by computing a similarity between the one or more known characters in the frame identifier and the one or more characters in the frame identification information, wherein the computing the similarity includes dividing a total number of matching pixels between the one or more characters in the frame identification information and the one or more known characters in the frame identifier by a sum of the total number of matching pixels and a total number of nonmatchinq pixels between the one or more characters in the frame identification information and the one or more known characters in the frame identifier; and estimate a quality of resolution of the frame of media content based on the quality of resolution of the frame identification information. - View Dependent Claims (13, 14, 15, 16)
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Specification