Surface rendering for volume data in an ultrasound system

1. An ultrasound system, comprising:

an ultrasound data acquisition unit configured to transmit and receive ultrasound signals to and from a target object to thereby acquire ultrasound data corresponding to a plurality of frames;

a volume data former configured to generate volume data corresponding to the plurality of frames based on the ultrasound data, the volume data including a plurality of voxels; and

a processing unit configured to detect edges from frames included in the volume data, detect voxels of the edges connected to each other, label upon the detected edges, group the labeled voxels into a plurality of voxel groups, determine a voxel group based on the number of voxels among the voxel groups, set the determined voxel group as a region of interest (ROI), set a first parameter including a parameter associated with surface reflection and a second parameter for processing skin tone based on a user input, and perform surface rendering upon voxels within the ROI by using the first parameter and the second parameter to thereby form a 3-dimensional ultrasound image.

2. The ultrasound system of claim 1 , wherein the processing unit performs

connected component analysis (CCA) upon the detected edges, each voxel group has an identical label, and

the determined voxel group has the largest number of voxels among the voxel groups.

3. The ultrasound system of claim 2 , wherein the processing unit further performs filtering for edge enhancement and noise removal upon the volume data.

4. The ultrasound system of claim 3 , wherein the processing unit performs a denoising filter.

5. The ultrasound system of claim 1 , further comprising a display unit to display the 3-dimensional ultrasound image.

6. A method of performing surface rendering upon volume data in an ultrasound system including an ultrasound data acquisition unit, a volume data forming unit and a processing unit, comprising:

a) at the ultrasound data acquisition unit, transmitting and receiving ultrasound signals to and from a target object to thereby acquire ultrasound data corresponding to a plurality of frames;

b) at the volume data forming unit, forming volume data corresponding to the plurality of frames based on the ultrasound data, the volume data including a plurality of voxels;

c) at the processing unit, detecting edges from frames included in the volume data, detecting voxels of the edges connected to each other, labeling upon the detected edges, grouping the labeled voxels into a plurality of voxel groups, determining a voxel group based on the number of voxels among the voxel groups, setting the determined voxel group as a region of interest (ROI);

d) at the processing unit, setting a first parameter including a parameter associated with surface reflection and a second parameter for processing skin tone based on a user input; and

e) at the processing unit, performing surface rendering upon voxels within the ROI by using the first parameter and the second parameter to thereby form a 3-dimensional ultrasound image.

7. The method of claim 6 , further comprising performing filtering for edge enhancement and noise removal upon the volume data before the step c).

8. The method of claim 6 , wherein the step c) includes performing edge detection upon the respective frames to detect the edges.

9. The method of claim 6 , wherein the step c) includes:

performing connected component analysis upon the detected edges,

each voxel group has an identical label; and

comparing the voxels within the respective groups to determine a voxel group having the largest number of voxels.

10. The method of claim 6 , further comprising displaying the 3-dimensional ultrasound image on a display unit.