Finger Tracking In Real Time Human Computer Interaction Pdf

If the user moves an outstretched forefinger in front of the camera, the mouse pointer follows the finger in real-time. From time to time it is necessary to go back one slide or to jump to a certain slide within the presentation. The resulting picture on the wall resembles the old paper-pinning technique but has the big advantage that it can be saved at any time. The interaction between human and computer during a presentation is focused on navigating between a set of slides.

The user can just walk up to the system and use it at any time. In this case, it is the same as in the previous typology as there is a wide variety of deployment thesis on this subject.

Finger Tracking In Real Time Human Computer Interaction

Please help to improve this article by introducing more precise citations. Fingertip finding deals with extraction of information from hand features and positions. This way the usability of the system can easily be tested.


This system was born based on the human-computer interaction problem. Finger-tracking is usage of bare hand to operate a computer in order to make human-computer interaction much more faster and easier.

Finger tracking

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On the top of finger tracking, many users require positional tracking for the whole hand in space. The objective is to allow the communication between them and the use of gestures and hand movements to be more intuitive, Finger tracking systems have been created. The visual occlusion is a very intuitive method to provide a more realistic viewpoint of the virtual information in three dimensions. It provides a new base for new interactions in the modeling, the control of the animation and the added realism.

The system allows following the object, even though if some markers are not visible. The user's hand will become the only necessary controlling device. To detect such pointers through an interaction, we enable ultrasound infrared sensors.


For this purpose manual measurement of the hand or automatic measurement extraction can be used. There are several methods for marker detection like border marker and estimated marker methods. Because of the spatial relationships of all the markers are known, the positions of the markers that are not visible can be computed by using the markers that are known. The current generations of motion capture gloves are able to withstand unbelievable magnetic interference. From Wikipedia, the free encyclopedia.

Users of optical mocap systems claims that the most post-process work is usually due to finger capture. To rearrange the items on the wall the participants just walk up to the wall and move the text lines around with the finger. For projected surfaces the FingerMouse is easier to use because the fingertip and mouse-pointer are always in the same place. Since inertial sensors are tracking only rotations, como crear una intranet paso a paso pdf the rotations have to be applied to some hand skeleton in order to get proper output.

Finger Tracking In Real Time Human Computer Interaction

Three high-resolution cameras are responsible for capturing each marker and measure its positions. But for other mouse functions, such as navigating a document, the FingerMouse could offer additional usability. The sensors are typically inserted into textile glove which makes the use of the sensors more comfortable. Keeping the finger in the same position for one second generates a single mouse click.

Regarding the first one, to carry out this tracking, we need an intermediate external device, used as a tool for executing different instructions. First an item is selected by placing a finger next to it for a second. In any case, the main objective is to facilitate the task of executing commands to the computer via natural language or interacting gesture.

This model can be applied to a more reduced scale to describe hand motion and based on a wide scale to describe a complete body motion. Also, it is interesting to compare the finger-based mouse-pointer control with the standard mouse as a reference. It is possible, though, that the same applications could have been built with other fnger-tracking systems. We could divide this technique into finger tracking and interface.

The second system is built to demonstrate how simple hand gestures can be used to control an application. Balasubramaniam, Ramesh ed. The estimation of each image is calculated by finding the state vector that better fits to the measured characteristics.

Thought, the magnetic imunity depends on multiple factors - manufacturer, price range and number of sensors used in mocap glove. The technique consists of label each finger joint links is modeled as a cylinder. The fact that many pointers can be handled as one, problems would be solved.

Thus such systems rarely have been used in consumer applications due to its high price and complexity. The BrainStorm system is built for the described scenario. This is an interesting technique from the point of view that is more simple and less expensive, because it only needs one camera. In this system we use inertial and optical motion capture systems.

The computer automatically distributes the user input on the screen, which is projected onto the wall. Selected items can be moved freely on the screen.

Finger tracking

Therefore, the steps and treatment technique are different depending on the purpose and needs of the person who will use this technique. Other systems that allow bare-hand manipulation of items projected to a wall, as done with Brainstorm, or presentation control with hand postures, as done with Freehand Present. We do the axes at each joint and bisector of this axis is the projection of the joint.

During the idea generation phase, users can type their thoughts into a wireless keyboard and attach colors to their input. For standard workplaces it is hard to beat the point-andclick feature of the mouse. Gesture recognition has been demonstrated with this system. Finger pointing systems aim to replace pointing and clicking devices like the mouse with the bare hand. The objective is centered on the following idea computers should be easier in terms of usage if there is a possibility to operate through natural language or gesture interaction.

Finger tracking

The Free Hand Present system uses simple hand gestures for the three described cases. Regarding the last one, it computes a sequence estimation of the image which detects the hand part of the background.

The mouse pointer is a simple and well-known feedback system that permits us to show the robustness and responsiveness of the finger tracker. It is also possible to perform active tracking of fingers.