Standard Mobile Imaging Architecture
FunctionalityMechanicsReliabilityCharacterizationInterface
Functionality

SMIA Functionality specification is divided three different documents:

  • Functional specification
  • Software and application specification
  • Symbian Camera device driver specification.

Functional specification

The SMIA Functional Specification objective is to fully standardise the electrical, control and image data interfaces for raw Bayer sensor modules targeted at mobile applications. Knowing how the basic system will function regardless of camera attachment resolution and frame-rate by baseline compliancy

The main objective is driven by the requirement to be able to connect ANY SMIA compliant sensor to ANY SMIA compliant host system with matching capabilities and get a working system with acceptable performance.

This self configuration nature is a key feature of the Functional Specification and vital to the overall SMIA objectives.

  • Making a Raw Bayer Sensor Module easier to integrate in a system to create a 'camera'
  • Creating a standard applicable to a wide range of sensor resolutions and frame-rates, to proliferate a family of 'like' modules with known upgrade paths.
  • Improving design and verification cycles
  • Enabling true second sourcing of sensor modules.

The functional specification must be equally applicable to both software host implementations as well as hosts implemented with dedicated hardware machines.

Software and application specification

This specification explains how to use SMIA image sensors from Software point of view of products. It includes system diagrams and Typical still and video capturing sequences. Power up and down sequences is also included. Sensor personality information is there too.

Symbian Camera device driver specification

An existing standard interface is the Symbian On-board Camera API. It allows basic photography but does not allow things like manual exposure or gain control. This specification defines a logical device driver API to allow low-level control of image sensor. It is also example implementation for other mobile operating system.

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