SFM

Structs for interacting with reconstruction data from different SFM programs

• COLMAP
  • Cameras
  • Points
• OpenSFM
  • reconstruction.json
• Meshroom
  • cameras.sfm

COLMAP

Point Data

Interact with COLMAPS's points3D.bin file output under the sparse reconstruction data.

package example

import (
	"fmt"

	"github.com/EliCDavis/sfm/colmap"
)

func main() {
	points, err := colmap.LoadPoints3DBinary("ColmapProject/sparse/0/points3D.bin")
	if err != nil {
		panic(err)
	}

	fmt.Printf("File contains %d points", len(points))
}

Cameras

Interact with COLMAPS's cameras.bin file output under the sparse reconstruction data.

package example

import (
	"fmt"

	"github.com/EliCDavis/sfm/colmap"
)

func main() {
	cameras, err := colmap.LoadCamerasBinary("ColmapProject/sparse/0/cameras.bin")
	if err != nil {
		panic(err)
	}

	fmt.Printf("File contains %d cameras", len(cameras))
}

Meshroom

Interact with Meshroom's cameras.sfm file output from the StructureFromMotion step.

package example

import (
	"fmt"

	"github.com/EliCDavis/sfm/meshroom"
)

func main() {
	cameras, err := meshroom.LoadCameras("MeshroomProject/MeshroomCache/StructureFromMotion/abc123/cameras.sfm")
	if err != nil {
		panic(err)
	}

	fmt.Printf("File contains %d Poses", len(cameras.Poses))
}

OpenSFM

Interact with OpenSFM's reconstruction.json file output from the reconstruct step.

package example

import (
	"fmt"

	"github.com/EliCDavis/sfm/opensfm"
)

func main() {
	reconstructions, err := opensfm.LoadReconstruction("MyOpenSFMProject/reconstruction.json")
	if err != nil {
		panic(err)
	}

	fmt.Printf("File contains %d reconstructions", len(reconstructions))
}