CameraIntrinsics


          public     class
          CameraIntrinsics

Provides information about the physical characteristics of the device camera, for the camera image (CPU) or texture (GPU). The CameraIntrinsics is a long-lived object, and the properties of CameraIntrinsics may be updated every time Session.update() is called.

Public Methods

`float[]`	`getFocalLength()` Returns the camera's focal length in pixels.
`void`	`getFocalLength(float[] focalLength, int offset)` Returns the camera's focal length in pixels.
`void`	`getImageDimensions(int[] dimensions, int offset)` Returns the camera's image dimensions.
`int[]`	`getImageDimensions()` Returns a `int[2]` containing the image dimensions.
`float[]`	`getPrincipalPoint()` Returns a `float[2]` containing the principal point.
`void`	`getPrincipalPoint(float[] principalPoint, int offset)` Returns the camera's principal point.

Inherited Methods

From

class
            java.lang.Object

`Object`	`clone()`
`boolean`	`equals(Object arg0)`
`void`	`finalize()`
`final Class<?>`	`getClass()`
`int`	`hashCode()`
`final void`	`notify()`
`final void`	`notifyAll()`
`String`	`toString()`
`final void`	`wait(long arg0, int arg1)`
`final void`	`wait(long arg0)`
`final void`	`wait()`

Public Methods

public float[] getFocalLength ()

getFocalLength

public float[] getFocalLength()

Returns the camera's focal length in pixels.

The focal length is conventionally represented in pixels. For a detailed explanation, please see Disecting the Camera Matrix, Part 3: The Intrinsic Matrix. Pixels-to-meters conversion can use SENSOR_INFO_PHYSICAL_SIZE and SENSOR_INFO_PIXEL_ARRAY_SIZE in the Android Characteristics API.

Details
Returns	a `float[2]` containing the focal length. The order of values is {fx, fy}.

public void getFocalLength (float[] focalLength, int offset)

getFocalLength

public void getFocalLength(
  float[] focalLength,
  int offset
)

Returns the camera's focal length in pixels.

Details

Parameters

`focalLength`	storage for at least 2 floats representing the focal length. The order of values is {fx, fy}.
`offset`	the offset in `focalLength` at which to begin writing the focal length values.

public void getImageDimensions (int[] dimensions, int offset)

getImageDimensions

public void getImageDimensions(
  int[] dimensions,
  int offset
)

Returns the camera's image dimensions. The order of values is {width, height}.

Details

Parameters

`dimensions`	storage for at least 2 ints representing the image's width and height.
`offset`	the offset in `dimensions` at which to begin writing the image dimension's values.

public int[] getImageDimensions ()

getImageDimensions

public int[] getImageDimensions()

Returns a int[2] containing the image dimensions. The order of values is {width, height}.

public float[] getPrincipalPoint ()

getPrincipalPoint

public float[] getPrincipalPoint()

Returns a float[2] containing the principal point. The order of values is {cx, cy}.

public void getPrincipalPoint (float[] principalPoint, int offset)

getPrincipalPoint

public void getPrincipalPoint(
  float[] principalPoint,
  int offset
)

Returns the camera's principal point. The order of values is {cx, cy}.

Details

Parameters

`principalPoint`	storage for at least 2 floats representing the principal point.
`offset`	the offset in `principalPoint` at which to begin writing the principal point's values.

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Public Methods

Inherited Methods

Public Methods

CameraIntrinsics