Filter Attribute Keys

Overview

Attribute keys are used for the attribute dictionary of a filter. Most entries in the attribute dictionary are optional. The attribute kCIAttributeFilterName is mandatory. For a parameter, the attribute kCIAttributeClass is mandatory because it specifies the class name of the filter.

A parameter of type NSNumber does not necessarily need the attributes kCIAttributeMin and kCIAttributeMax. These attributes are not present when the parameter has no upper or lower bounds. For example, the Gaussian blur filter has a radius parameter with a minimum of 0 but no maximum value to indicate that all nonnegative values are valid.

Topics

Constants

• kCIAttributeFilterName
• kCIAttributeFilterDisplayName
• kCIAttributeDescription
• kCIAttributeFilterAvailable_Mac
• kCIAttributeFilterAvailable_iOS
• kCIAttributeReferenceDocumentation
• kCIAttributeFilterCategories
• kCIAttributeClass
• kCIAttributeType
• kCIAttributeMin
• kCIAttributeMax
• kCIAttributeSliderMin
• kCIAttributeSliderMax
• kCIAttributeDefault
• kCIAttributeIdentity
• kCIAttributeName
• kCIAttributeDisplayName

See Also

Constants

• Data Type Attributes
• Vector Quantity Attributes
• Color Attribute Keys
• Image Attribute Keys
• Filter Category Keys
• Options for Applying a Filter
• User Interface Control Options
• User Interface Options
• Filter Parameter Keys
• RAW Image Options