Augmented Reality - the emerging technology
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This document provides an overview of augmented reality (AR), including definitions, comparisons to virtual reality, how AR works, and examples of applications. It defines AR as enhancing the real-world environment with computer-generated input like graphics or sound. Key points made include that AR combines real and virtual elements in real-time, requires devices like displays and sensors, uses image registration to align real and virtual images, and has applications in medicine, military, education and games. Challenges discussed are performance issues, interaction difficulties, and alignment problems.
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Augmented Reality - the emerging technology
- 2. Contents Introduction What is AR? Augmented Reality vs. Virtual Reality How is it used? How does it work? Implementation Framework Applications Advantages Disadvantages Issues in Augmented Reality
- 3. Augmented reality (AR) is a term for a live direct or an indirect view of a physical, real-world environment whose elements are augmented by computer generated sensory input, such as sound or graphics. INTRODUCTION
- 4. What’s the difference ??? Augmented Reality System augments the real world scene User maintains a sense of presence in real world Needs a mechanism to combine virtual and real worlds Hard to register real and virtual Virtual Reality Totally immersive environment Senses are under control of system Need a mechanism to feed virtual world to user Hard to make VR world interesting
- 6. Nuts and Bolts of AR Characteristics of Augmented Reality: • it combines real and virtual • it is interactive in real time • it is registered in 3D. Hardware needed for Augmented Reality • display • tracking (e.g. GPS, compass) • input devices (eg Camera) • sensors (eg accelerometer) • processer (eg CPU)
- 7. Image Registration Registration – the process of alignment of real and synthetic stimuli Image registration – process of identification of key features in an image of physical world so that computer generated graphics can be properly aligned Image registration is computer vision task Can be very difficult in the general case Visual AR markers can be used to help Requirements for immersive AR • High precision • Real time
- 8. Drivers: video games, cell phone apps Display types: 1. Head-mounted, or heads-up, displays 2. Handheld displays 3. Spatial displays TECHNOLOGY
- 9. AR HEAD MOUNTED DISPLAY
- 10. AR HANDHELD DISPLAYS Small handheld computing device Uses global positioning systems (GPS)
- 11. AR SPATIAL DISPLAYS Nothing to wear and/or carry Uses digital projectors to display information Marker-based and markerless devices Ex. Smart projectors
- 12. Applications of AR Medical Military Games
- 14. Limitations Spam and Security take some generations to make Augmented Reality feasible as a general interface technique accessible to the public. Content may obscure and/or narrow a user’s interests or tastes Privacy control will become a big issue. Walking up to a stranger or a group of people might reveal status, Tweets, and information that may cause breaches of privacy.
- 15. Issues in Augmented Reality Performance Issues Real time processing of images can be a challenge and often can slow down augmented reality systems. Interaction Issues Users within a mixed environment because of augmented reality have difficulties interacting with the environment as normal. Alignment Issues People working in an augmented reality are more sensitive to alignment errors. Proper calibration and alignment with the reference frame of the world is crucial
- 16. Looking into Future Expanding a PC screen to real world environment. Program windows and icons appear as virtual devices in real space & eye and gesture operated, by gazing or pointing. Eg.Microsoft Hololens Enhanced media application like pseudo holographic virtual screens, virtual surround cinema. Replacement of cell phones : eye dialing, insertion of information directly into environment.
- 17. THANK YOU !!
Editor's Notes
- Framed pictures in a row (Intermediate) To reproduce the picture effects on this slide, do the following: On the Home tab, in the Slides group, click Layout and then click Blank. On the Insert tab, in the Images group, click Picture. In the Insert Picture dialog box, select a picture and then click Insert. Under Picture Tools, on the Format tab, in the bottom right corner of the Size group, click the Size and Position dialog box launcher. In the Format Picture dialog box, resize or crop the image so that the height is set to 2” and the width is set to 2.67”. To crop the picture, click Crop in the left pane, and in the Crop pane, under Crop position, enter values into the Height, Width, Left, and Top boxes. To resize the picture, click Size in the left pane, and in the right pane, under Size and rotate, enter values into the Height and Width boxes. On the slide, select the picture. Under Picture Tools, on the Format tab, in the Picture Styles group, click Quick Styles, and then click Reflected Bevel, Black (fifth row, fifth option from the left). Select the picture. On the Home tab, in the Clipboard group, click the arrow to the right of Copy, and then click Duplicate. Right-click the duplicate picture, and then click Change Picture. In the Insert Picture dialog box, select a picture and click Insert. If the inserted picture is a different height and width, adjust the width and height. Under Picture Tools, on the Format tab, in the bottom right corner of the Size group, click the Size and Position dialog box launcher. In the Size and Position dialog box, on the Size tab, resize or crop the picture as needed so that under Size and rotate, the Height box is set to 2” and the Width box is set to 2.67”. Resize the picture under Size and rotate by entering values into the Height and Width boxes. Crop the picture under Crop from by entering values into the Left, Right, Top, and Bottom boxes. Repeat the process in steps 6-8 to create another duplicate picture, for a total of three pictures. Drag the pictures to form a row across the slide. Press and hold SHIFT and select all three pictures. On the Home tab, in the Drawing group, click Arrange, and then do the following: Point to Align, and then click Align to Slide. Point to Align, and then click Align Middle. Point to Align, and then click Distribute Horizontally. Click Group. On the Home tab, in the Drawing group, click Shape Effects, point to 3-D Rotation, and then under Perspective click Perspective Contrasting Left (second row, fourth option from the left). Drag the group to position it above the middle of the slide and also position it slightly to the left. To reproduce the background effects on this slide, do the following: Right-click the slide background area, and then click Format Background. In the Format Background dialog box, click Fill in the left pane, select Gradient fill in the Fill pane, and then do the following: In the Type list, select Linear. Click the button next to Direction, and then click Linear Down (first row, second option from the left). In the Angle text box, enter 90⁰. Under Gradient stops, click Add gradient stops or Remove gradient stops until two stops appear in the slider. Also under Gradient stops, customize the gradient stops that you added as follows: Select the first stop in the slider, and then do the following: In the Position box, enter 50%. Click the button next to Color, and then under Theme Colors click Black, Text 1, Lighter 5% (sixth row, second option from the left). Select the second stop in the slider, and then do the following: In the Position box, enter 100%. Click the button next to Color, and then under Theme Colors click Dark Blue, Text 2, Lighter 40% (fourth row, fourth option from the left).
- Framed pictures in a row (Intermediate) To reproduce the picture effects on this slide, do the following: On the Home tab, in the Slides group, click Layout and then click Blank. On the Insert tab, in the Images group, click Picture. In the Insert Picture dialog box, select a picture and then click Insert. Under Picture Tools, on the Format tab, in the bottom right corner of the Size group, click the Size and Position dialog box launcher. In the Format Picture dialog box, resize or crop the image so that the height is set to 2” and the width is set to 2.67”. To crop the picture, click Crop in the left pane, and in the Crop pane, under Crop position, enter values into the Height, Width, Left, and Top boxes. To resize the picture, click Size in the left pane, and in the right pane, under Size and rotate, enter values into the Height and Width boxes. On the slide, select the picture. Under Picture Tools, on the Format tab, in the Picture Styles group, click Quick Styles, and then click Reflected Bevel, Black (fifth row, fifth option from the left). Select the picture. On the Home tab, in the Clipboard group, click the arrow to the right of Copy, and then click Duplicate. Right-click the duplicate picture, and then click Change Picture. In the Insert Picture dialog box, select a picture and click Insert. If the inserted picture is a different height and width, adjust the width and height. Under Picture Tools, on the Format tab, in the bottom right corner of the Size group, click the Size and Position dialog box launcher. In the Size and Position dialog box, on the Size tab, resize or crop the picture as needed so that under Size and rotate, the Height box is set to 2” and the Width box is set to 2.67”. Resize the picture under Size and rotate by entering values into the Height and Width boxes. Crop the picture under Crop from by entering values into the Left, Right, Top, and Bottom boxes. Repeat the process in steps 6-8 to create another duplicate picture, for a total of three pictures. Drag the pictures to form a row across the slide. Press and hold SHIFT and select all three pictures. On the Home tab, in the Drawing group, click Arrange, and then do the following: Point to Align, and then click Align to Slide. Point to Align, and then click Align Middle. Point to Align, and then click Distribute Horizontally. Click Group. On the Home tab, in the Drawing group, click Shape Effects, point to 3-D Rotation, and then under Perspective click Perspective Contrasting Left (second row, fourth option from the left). Drag the group to position it above the middle of the slide and also position it slightly to the left. To reproduce the background effects on this slide, do the following: Right-click the slide background area, and then click Format Background. In the Format Background dialog box, click Fill in the left pane, select Gradient fill in the Fill pane, and then do the following: In the Type list, select Linear. Click the button next to Direction, and then click Linear Down (first row, second option from the left). In the Angle text box, enter 90⁰. Under Gradient stops, click Add gradient stops or Remove gradient stops until two stops appear in the slider. Also under Gradient stops, customize the gradient stops that you added as follows: Select the first stop in the slider, and then do the following: In the Position box, enter 50%. Click the button next to Color, and then under Theme Colors click Black, Text 1, Lighter 5% (sixth row, second option from the left). Select the second stop in the slider, and then do the following: In the Position box, enter 100%. Click the button next to Color, and then under Theme Colors click Dark Blue, Text 2, Lighter 40% (fourth row, fourth option from the left).
- Framed pictures in a row (Intermediate) To reproduce the picture effects on this slide, do the following: On the Home tab, in the Slides group, click Layout and then click Blank. On the Insert tab, in the Images group, click Picture. In the Insert Picture dialog box, select a picture and then click Insert. Under Picture Tools, on the Format tab, in the bottom right corner of the Size group, click the Size and Position dialog box launcher. In the Format Picture dialog box, resize or crop the image so that the height is set to 2” and the width is set to 2.67”. To crop the picture, click Crop in the left pane, and in the Crop pane, under Crop position, enter values into the Height, Width, Left, and Top boxes. To resize the picture, click Size in the left pane, and in the right pane, under Size and rotate, enter values into the Height and Width boxes. On the slide, select the picture. Under Picture Tools, on the Format tab, in the Picture Styles group, click Quick Styles, and then click Reflected Bevel, Black (fifth row, fifth option from the left). Select the picture. On the Home tab, in the Clipboard group, click the arrow to the right of Copy, and then click Duplicate. Right-click the duplicate picture, and then click Change Picture. In the Insert Picture dialog box, select a picture and click Insert. If the inserted picture is a different height and width, adjust the width and height. Under Picture Tools, on the Format tab, in the bottom right corner of the Size group, click the Size and Position dialog box launcher. In the Size and Position dialog box, on the Size tab, resize or crop the picture as needed so that under Size and rotate, the Height box is set to 2” and the Width box is set to 2.67”. Resize the picture under Size and rotate by entering values into the Height and Width boxes. Crop the picture under Crop from by entering values into the Left, Right, Top, and Bottom boxes. Repeat the process in steps 6-8 to create another duplicate picture, for a total of three pictures. Drag the pictures to form a row across the slide. Press and hold SHIFT and select all three pictures. On the Home tab, in the Drawing group, click Arrange, and then do the following: Point to Align, and then click Align to Slide. Point to Align, and then click Align Middle. Point to Align, and then click Distribute Horizontally. Click Group. On the Home tab, in the Drawing group, click Shape Effects, point to 3-D Rotation, and then under Perspective click Perspective Contrasting Left (second row, fourth option from the left). Drag the group to position it above the middle of the slide and also position it slightly to the left. To reproduce the background effects on this slide, do the following: Right-click the slide background area, and then click Format Background. In the Format Background dialog box, click Fill in the left pane, select Gradient fill in the Fill pane, and then do the following: In the Type list, select Linear. Click the button next to Direction, and then click Linear Down (first row, second option from the left). In the Angle text box, enter 90⁰. Under Gradient stops, click Add gradient stops or Remove gradient stops until two stops appear in the slider. Also under Gradient stops, customize the gradient stops that you added as follows: Select the first stop in the slider, and then do the following: In the Position box, enter 50%. Click the button next to Color, and then under Theme Colors click Black, Text 1, Lighter 5% (sixth row, second option from the left). Select the second stop in the slider, and then do the following: In the Position box, enter 100%. Click the button next to Color, and then under Theme Colors click Dark Blue, Text 2, Lighter 40% (fourth row, fourth option from the left).
- Framed pictures in a row (Intermediate) To reproduce the picture effects on this slide, do the following: On the Home tab, in the Slides group, click Layout and then click Blank. On the Insert tab, in the Images group, click Picture. In the Insert Picture dialog box, select a picture and then click Insert. Under Picture Tools, on the Format tab, in the bottom right corner of the Size group, click the Size and Position dialog box launcher. In the Format Picture dialog box, resize or crop the image so that the height is set to 2” and the width is set to 2.67”. To crop the picture, click Crop in the left pane, and in the Crop pane, under Crop position, enter values into the Height, Width, Left, and Top boxes. To resize the picture, click Size in the left pane, and in the right pane, under Size and rotate, enter values into the Height and Width boxes. On the slide, select the picture. Under Picture Tools, on the Format tab, in the Picture Styles group, click Quick Styles, and then click Reflected Bevel, Black (fifth row, fifth option from the left). Select the picture. On the Home tab, in the Clipboard group, click the arrow to the right of Copy, and then click Duplicate. Right-click the duplicate picture, and then click Change Picture. In the Insert Picture dialog box, select a picture and click Insert. If the inserted picture is a different height and width, adjust the width and height. Under Picture Tools, on the Format tab, in the bottom right corner of the Size group, click the Size and Position dialog box launcher. In the Size and Position dialog box, on the Size tab, resize or crop the picture as needed so that under Size and rotate, the Height box is set to 2” and the Width box is set to 2.67”. Resize the picture under Size and rotate by entering values into the Height and Width boxes. Crop the picture under Crop from by entering values into the Left, Right, Top, and Bottom boxes. Repeat the process in steps 6-8 to create another duplicate picture, for a total of three pictures. Drag the pictures to form a row across the slide. Press and hold SHIFT and select all three pictures. On the Home tab, in the Drawing group, click Arrange, and then do the following: Point to Align, and then click Align to Slide. Point to Align, and then click Align Middle. Point to Align, and then click Distribute Horizontally. Click Group. On the Home tab, in the Drawing group, click Shape Effects, point to 3-D Rotation, and then under Perspective click Perspective Contrasting Left (second row, fourth option from the left). Drag the group to position it above the middle of the slide and also position it slightly to the left. To reproduce the background effects on this slide, do the following: Right-click the slide background area, and then click Format Background. In the Format Background dialog box, click Fill in the left pane, select Gradient fill in the Fill pane, and then do the following: In the Type list, select Linear. Click the button next to Direction, and then click Linear Down (first row, second option from the left). In the Angle text box, enter 90⁰. Under Gradient stops, click Add gradient stops or Remove gradient stops until two stops appear in the slider. Also under Gradient stops, customize the gradient stops that you added as follows: Select the first stop in the slider, and then do the following: In the Position box, enter 50%. Click the button next to Color, and then under Theme Colors click Black, Text 1, Lighter 5% (sixth row, second option from the left). Select the second stop in the slider, and then do the following: In the Position box, enter 100%. Click the button next to Color, and then under Theme Colors click Dark Blue, Text 2, Lighter 40% (fourth row, fourth option from the left).