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 ViPER File Format
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- Use
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- Format used in ViPER suite
- Originally defined for evaluation purposes
- First uses include:
- Text detection
- Face detection
- Person detection
- A Descriptor
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- It is a record describing some element of the video.
- It is an object that conforms to a user defined schema.
- It is composed of several named, typed attributes.
- Has a unique id and an associated span in which it is valid.
- One of three types: File, Content, or Object
- File
- Refers to data that reflects the video as a whole, or
other metadata about the video, such as file format and frame rate.
- Content
- Instances of this type may only occur one at a time,
and any given instance may not change over the course of its life. Each instance has a
time span and a set of attributes.
- Object
- Refers to an object that may have many instances at any
given time, and whose instances may change over time.
- An Attribute
- Each descriptor has several attributes.
- An attribute can be one of several data types:
- svalue
- strings of characters
- lvalue
- enumerated value: one of several user defined words
- bbox, polygon, etc.
- one of several different shapes
- reference
- reference to another descriptor
- The File Format
- Simple XML based format.
- The config section defines the descriptors
- The data section instantiates descriptors for one or
more media files
- examples
example one
example two
example three
- xml schemata
viper structure
data types - heirarchy
- viper
- config
- descriptor definition
- descriptor definition
- data
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