A Pilot Study of Speech and Pen User Interface For Graphical Editing

As computer size continues to decrease and new user interface technologies become more ubiquitous, the conventional keyboard and mouse input interfaces are becoming harder to design into newer machines and less practical for use in some applications. The pen is one input technology more suited for the upcoming generation of smaller computers using direct manipulation interfaces. However, a pen-only user interface relies on continuous gesture and handwriting tecognizers that are often slow, inaccurate, and error prone for command and text entry. Speech recognition is an input modality that can input commands quickly and potentially be a fast text entry mechanism, but lacks the capability of direct object manipulation and has inaccurate recognition. The combination of both pen and voice input should complement each other for direct graphic manipulation applications. This thesis compares the speed, usability, user-friendliness, and accuracy of a pen-only graphical editor against a pen-with-speech graphical editor. Two versions of a graphical editor were developed which have the same functionality. One is controlled by pen input alone and the other is controlled by both pen and speech input. The pen-only editor used the tool bar for command entry and character handwriting recognition for text entry. The pen-with-speech editor used speech recognition for both command and text entry. In a pilot study using both editors, 13 computer science graduate students were asked to draw a petri net, a state diagram, a flowchart, and a dataflow diagram. Shape entry was facilitated by automatic shape recognition that transformed continuous drawing information into a perfected shape. Experimental results comparing the editor\u27s user interfaces were then analysed. Results show that the addition of speech made the editor slightly faster. Experimental subjects claimed this editor was more usable, perceived to be faster, and preferred to use. About half of the subjects found the editor with speech not to be more user-friendly than the pen-only editor. The accuracy of character recognition for the pen-with-speech editor was significantly inferior to the pen-only editor\u27s handwriting recognition. The low recognition accuracy was caused by the speech recognizer\u27s inability to distinguish between similar sounding letters

Freeform User Interfaces for Graphical Computing

報告番号: 甲15222 ; 学位授与年月日: 2000-03-29 ; 学位の種別: 課程博士 ; 学位の種類: 博士(工学) ; 学位記番号: 博工第4717号 ; 研究科・専攻: 工学系研究科情報工学専

The use of interactive graphics in programs for the computer aided design of electric networks

Imperial Users onl

Delivering a graphic design course online: simulating a real classroom situation and speculating what technologies can ideally offer in this virtual situation

This thesis examines a new way to simplify online education and to simulate a real classroom situation. It explores how a graphic design class can be conducted online where the students from different geographical locations and faculty can interact instantaneously with the aid of video, chat and whiteboard. For the most part, the potential for Macromedia Flash Communication Server to deliver chat, whiteboard and video functionality are assessed. It is speculated that video images are slightly jerky among Modem users whereas sharp video images are obtained with high-speed Internet connection. The survey findings among the design students and faculty at R.I.T reveal the following: 75% agreed that the project can be Functional; 68% esteem the Esthetic value of the web site and 48% are in favor of its Usability features. The whole project is executed in Flash MX 2004, making use of User Interface Components and Communication Components

The application of computer-aided design techniques to site layout and planning

Imperial Users onl

A short history off-line

Emerging technologies for learning report - Article exploring the history of ICT in education and the lessons we can learn from the pas

Development of a character, line and point display system

A compact graphics terminal for use as the input to a computerized medical records system is described. The principal mode of communication between the terminal and the records system is by checklists and menu selection. However, the terminal accepts short, handwritten messages as well as conventional alphanumeric input. The terminal consists of an electronic tablet, a display, a microcomputer controller, a character generator, and a refresh memory for the display. An Intel SBC 80/10 microcomputer controls the flow of information and a 16 kilobyte memory stores the point-by-point array of information to be displayed. A specially designed interface continuously generates the raster display without the intervention of the microcomputer