ArCameraIntrinsics

Provides information about the physical characteristics of the device camera.

Summary

Typedefs
`ArCameraIntrinsics`	typedef `struct ArCameraIntrinsics_` The physical characteristics of a given camera.

Functions
`ArCameraIntrinsics_create(const ArSession session, ArCameraIntrinsics *out_camera_intrinsics)`	`void` Allocates a camera intrinstics object.
`ArCameraIntrinsics_destroy(ArCameraIntrinsics *camera_intrinsics)`	`void` Releases the provided camera intrinsics object.
`ArCameraIntrinsics_getFocalLength(const ArSession session, const ArCameraIntrinsics intrinsics, float out_fx, float out_fy)`	`void` Returns the camera's focal length in pixels.
`ArCameraIntrinsics_getImageDimensions(const ArSession session, const ArCameraIntrinsics intrinsics, int32_t out_width, int32_t out_height)`	`void` Returns the image's width and height in pixels.
`ArCameraIntrinsics_getPrincipalPoint(const ArSession session, const ArCameraIntrinsics intrinsics, float out_cx, float out_cy)`	`void` Returns the principal point in pixels.

Typedefs

ArCameraIntrinsics

struct ArCameraIntrinsics_ ArCameraIntrinsics

The physical characteristics of a given camera.

Allocate with: ArCameraIntrinsics_create
Release with: ArCameraIntrinsics_destroy

Functions

ArCameraIntrinsics_create

void ArCameraIntrinsics_create(
  const ArSession *session,
  ArCameraIntrinsics **out_camera_intrinsics
)

Allocates a camera intrinstics object.

Details

Parameters

`session`	The ARCore session
`out_camera_intrinsics`	The `ArCameraIntrinsics` data.

ArCameraIntrinsics_destroy

void ArCameraIntrinsics_destroy(
  ArCameraIntrinsics *camera_intrinsics
)

Releases the provided camera intrinsics object.

ArCameraIntrinsics_getFocalLength

void ArCameraIntrinsics_getFocalLength(
  const ArSession *session,
  const ArCameraIntrinsics *intrinsics,
  float *out_fx,
  float *out_fy
)

Returns the camera's focal length in pixels.

The focal length is conventionally represented in pixels. For a detailed explanation, please see https://ksimek.github.io/2013/08/13/intrinsic. Pixels-to-meters conversion can use SENSOR_INFO_PHYSICAL_SIZE and SENSOR_INFO_PIXEL_ARRAY_SIZE in the Android Camera Characteristics API.

ArCameraIntrinsics_getImageDimensions

void ArCameraIntrinsics_getImageDimensions(
  const ArSession *session,
  const ArCameraIntrinsics *intrinsics,
  int32_t *out_width,
  int32_t *out_height
)

Returns the image's width and height in pixels.

ArCameraIntrinsics_getPrincipalPoint

void ArCameraIntrinsics_getPrincipalPoint(
  const ArSession *session,
  const ArCameraIntrinsics *intrinsics,
  float *out_cx,
  float *out_cy
)

Returns the principal point in pixels.