[Bf-blender-cvs] [36746474fdf] master: Tracking: Forward compatibility code for distortion models
Sergey Sharybin
noreply at git.blender.org
Thu Apr 9 10:59:37 CEST 2020
Commit: 36746474fdf4d05f3eccc45a42295dbbb7745d36
Author: Sergey Sharybin
Date: Thu Apr 9 10:57:18 2020 +0200
Branches: master
https://developer.blender.org/rB36746474fdf4d05f3eccc45a42295dbbb7745d36
Tracking: Forward compatibility code for distortion models
Allows to open newer files in older Blender after new distortion model
has been added.
It will behave as if this is a polynomial model with all 0 coefficients
which are then being refined and assigned explicitly after solving the
motion.
===================================================================
M source/blender/blenkernel/intern/tracking_util.c
===================================================================
diff --git a/source/blender/blenkernel/intern/tracking_util.c b/source/blender/blenkernel/intern/tracking_util.c
index d7600c06a6b..5f7452e4775 100644
--- a/source/blender/blenkernel/intern/tracking_util.c
+++ b/source/blender/blenkernel/intern/tracking_util.c
@@ -433,6 +433,59 @@ void tracking_marker_insert_disabled(MovieTrackingTrack *track,
}
}
+static void distortion_model_parameters_from_tracking(
+ const MovieTrackingCamera *camera, libmv_CameraIntrinsicsOptions *camera_intrinsics_options)
+{
+ switch (camera->distortion_model) {
+ case TRACKING_DISTORTION_MODEL_POLYNOMIAL:
+ camera_intrinsics_options->distortion_model = LIBMV_DISTORTION_MODEL_POLYNOMIAL;
+ camera_intrinsics_options->polynomial_k1 = camera->k1;
+ camera_intrinsics_options->polynomial_k2 = camera->k2;
+ camera_intrinsics_options->polynomial_k3 = camera->k3;
+ camera_intrinsics_options->polynomial_p1 = 0.0;
+ camera_intrinsics_options->polynomial_p2 = 0.0;
+ return;
+
+ case TRACKING_DISTORTION_MODEL_DIVISION:
+ camera_intrinsics_options->distortion_model = LIBMV_DISTORTION_MODEL_DIVISION;
+ camera_intrinsics_options->division_k1 = camera->division_k1;
+ camera_intrinsics_options->division_k2 = camera->division_k2;
+ return;
+ }
+
+ /* Unknown distortion model, which might be due to opening newer file in older Blender.
+ * Fallback to a known and supported model with 0 distortion. */
+ camera_intrinsics_options->distortion_model = LIBMV_DISTORTION_MODEL_POLYNOMIAL;
+ camera_intrinsics_options->polynomial_k1 = 0.0;
+ camera_intrinsics_options->polynomial_k2 = 0.0;
+ camera_intrinsics_options->polynomial_k3 = 0.0;
+ camera_intrinsics_options->polynomial_p1 = 0.0;
+ camera_intrinsics_options->polynomial_p2 = 0.0;
+}
+
+static void distortion_model_parameters_from_options(
+ const libmv_CameraIntrinsicsOptions *camera_intrinsics_options, MovieTrackingCamera *camera)
+{
+ switch (camera_intrinsics_options->distortion_model) {
+ case LIBMV_DISTORTION_MODEL_POLYNOMIAL:
+ camera->distortion_model = TRACKING_DISTORTION_MODEL_POLYNOMIAL;
+ camera->k1 = camera_intrinsics_options->polynomial_k1;
+ camera->k2 = camera_intrinsics_options->polynomial_k2;
+ camera->k3 = camera_intrinsics_options->polynomial_k3;
+ return;
+
+ case LIBMV_DISTORTION_MODEL_DIVISION:
+ camera->distortion_model = TRACKING_DISTORTION_MODEL_DIVISION;
+ camera->division_k1 = camera_intrinsics_options->division_k1;
+ camera->division_k2 = camera_intrinsics_options->division_k2;
+ return;
+ }
+
+ /* Libmv returned distortion model which is not known to Blender. This is a logical error in code
+ * and Blender side is to be updated to match Libmv. */
+ BLI_assert(!"Unknown distortion model");
+}
+
/* Fill in Libmv C-API camera intrinsics options from tracking structure. */
void tracking_cameraIntrinscisOptionsFromTracking(
MovieTracking *tracking,
@@ -450,24 +503,7 @@ void tracking_cameraIntrinscisOptionsFromTracking(
camera_intrinsics_options->principal_point_x = camera->principal[0];
camera_intrinsics_options->principal_point_y = camera->principal[1] * aspy;
- switch (camera->distortion_model) {
- case TRACKING_DISTORTION_MODEL_POLYNOMIAL:
- camera_intrinsics_options->distortion_model = LIBMV_DISTORTION_MODEL_POLYNOMIAL;
- camera_intrinsics_options->polynomial_k1 = camera->k1;
- camera_intrinsics_options->polynomial_k2 = camera->k2;
- camera_intrinsics_options->polynomial_k3 = camera->k3;
- camera_intrinsics_options->polynomial_p1 = 0.0;
- camera_intrinsics_options->polynomial_p2 = 0.0;
- break;
- case TRACKING_DISTORTION_MODEL_DIVISION:
- camera_intrinsics_options->distortion_model = LIBMV_DISTORTION_MODEL_DIVISION;
- camera_intrinsics_options->division_k1 = camera->division_k1;
- camera_intrinsics_options->division_k2 = camera->division_k2;
- break;
- default:
- BLI_assert(!"Unknown distortion model");
- break;
- }
+ distortion_model_parameters_from_tracking(camera, camera_intrinsics_options);
camera_intrinsics_options->image_width = calibration_width;
camera_intrinsics_options->image_height = (int)(calibration_height * aspy);
@@ -484,22 +520,7 @@ void tracking_trackingCameraFromIntrinscisOptions(
camera->principal[0] = camera_intrinsics_options->principal_point_x;
camera->principal[1] = camera_intrinsics_options->principal_point_y / (double)aspy;
- switch (camera_intrinsics_options->distortion_model) {
- case LIBMV_DISTORTION_MODEL_POLYNOMIAL:
- camera->distortion_model = TRACKING_DISTORTION_MODEL_POLYNOMIAL;
- camera->k1 = camera_intrinsics_options->polynomial_k1;
- camera->k2 = camera_intrinsics_options->polynomial_k2;
- camera->k3 = camera_intrinsics_options->polynomial_k3;
- break;
- case LIBMV_DISTORTION_MODEL_DIVISION:
- camera->distortion_model = TRACKING_DISTORTION_MODEL_DIVISION;
- camera->division_k1 = camera_intrinsics_options->division_k1;
- camera->division_k2 = camera_intrinsics_options->division_k2;
- break;
- default:
- BLI_assert(!"Unknown distortion model");
- break;
- }
+ distortion_model_parameters_from_options(camera_intrinsics_options, camera);
}
/* Get previous keyframed marker. */
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