As explained in Ashish S, Mukesh A, Anima S, Pankhuri D motion capturing and using motions to video games changed the gaming industry to a new era. Motion capturing can be done in several methods and using several tools. Motion capturing process can be classify into two major categories, Marker based and Marker less.
1. Marker based motion capture
Figure 1: Marker based motion capture. (LambSoft: Production Work)
To capture actor’s motions various types of markers are placed and record the body movements of actor. Figure 4 shows the steps of motion capturing process. Once placed on marker on actor’s body then the performer’s skeleton is identified and according to performer skeleton then create the character skeleton. Finally, the skinned character will create based on the identified character.
Below points were identified during the Marker based motion capturing process
- External devices needed to mark the actor’s body and capture the movements
- Cost is high
- Accuracy is high
- Time require to setup the device is also high
2. Marker less motion capture
Wearing of special equipment, special devices avoid in marker less motion capturing process. Then actor can do the activity in a freely manner. In this method actor’s movements is recorded in multiple video streams. Recorded video streams will analyze from a special computer vision algorithm. This method motion capturing part done from specific software and this will help to decrease the cost. These days available various kind of marker less devices and Microsoft Kinect is an example for that.
Below points were identified during the Marker less motion capturing process.
- External devices no needed to mark the actor’s body and capture the movements
- Cost is low
- Accuracy is low
- Time require to setup the device is also low