Update Z-up to Y-up conversion matrix in App.tsx to correct axis orientation. Remove default camera view rendering from Scene component to streamline camera setup.

src/App.tsx

@@ -24,8 +24,8 @@ const CV_TO_GL_MAT = new THREE.Matrix4().set(
 // Z-up to Y-up conversion matrix
 // Rotate -90 degrees around X axis to convert from Z-up to Y-up
 const Z_UP_TO_Y_UP = new THREE.Matrix4().set(
-  1, 0, 0, 0,
-  0, 0, 1, 0,
+  -1, 0, 0, 0,
+  0, 0, -1, 0,
   0, -1, 0, 0,
   0, 0, 0, 1
 )
@@ -210,7 +210,6 @@ const Scene = () => {
       const far = (1 / fov_x) * 20
       return <CameraViewFromExtrinsic key={key} name={`${key}(${fov_x.toFixed(1)})`} extrinsic={preProcessExtrinsic(value)} fov={fov_x} aspect={IMAGE_WIDTH / IMAGE_HEIGHT} far={far} />
     })}
-    <CameraViewFromExtrinsic name="default" extrinsic={DEFAULT_TRANSFORMATION_MATRIX} fov={60} aspect={IMAGE_WIDTH / IMAGE_HEIGHT} far={0.4} />
     <Axes />
   </group>)
   return (