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Tag: slide deck

When giving a slide presentation, show DIFFERENT slide decks to different groups in the audience! Never confuse your audience with an overly-technical presentation again. An amazing application of the same technology used in red-green-glasses-based 3D movies.

Background:

When giving a presentation to a diverse audience (e.g. of experts and non-experts, or of employees from two different departments in a company), you have a problem: you can only make one set of slides, but sometimes you might want to tailor different parts of the presentation to a different audience.

For example, one might want to give a presentation at an easily-understood overview level while also providing technical details for any domain experts in attendance.

Proposal:

Nearly all projectors and screens consist of three light-generating elements, in red (1), green (2), and blue (3).

By giving some members of the audience a pair of green-lens glasses (which block all red and blue light), we would be able to hide certain elements of the presentation that were not relevant to the green-glasses wearers. We can use a set of red-lens glasses and blue-lens glasses in the same way (see Figure 1).

With this technique, we can show up to three entirely different slide presentations, with the only limitation being that each presentation must consist of only monochromatic images.

Specifics:

  • Red glasses can see the following colors:  red, yellow, magenta, white [*].
  • Green glasses can see the following colors: green, yellow, cyan, white.
  • Blue glasses can see the following four colors: blue, magenta, cyan, white.

[*] Note that this is “additive” color space (where red + green = yellow), not the “subtractive” color space one might be familiar with from mixing paints.

Fig_1 3d_glasses_modified

Fig. 1: These glasses block certain wavelengths of light. By carefully constructing our slide decks, we can use these glasses to give up to three different presentations to the same audience at the same time.

So a slide that should be visible to everyone in the audience should be white (or shades of gray). Whereas if you only wanted to present to the red & green glasses-wearers (but not the blue ones), that text would be yellow. See Figure 2 for an example.

Fig_2_financial_results_all

Fig. 2: A sample presentation that is meant to provide both “optimistic” conclusions (green glasses) and “realistic” conclusions (red glasses). This is what the presentation looks like with no color-filtering glasses on.

 

Fig_3_red_normal

Fig. 3: The presentation from Figure 2 in “pessimistic / realistic” mode, as viewed through red lenses. All of the green text has disappeared!

 

Fig_4_green_optimistic

Fig. 4: The presentation from Figure 2 in “optimistic” mode, viewed through green lenses. Red text has disappeared.

 

Fig_5_what_it_looks_like_simulation

Fig. 5: Real-world demonstration: a color-enhanced version of what a red-blue version of this presentation looks like through red-blue “3D” glasses. The effect is almost 100% convincing for the human eye, but the camera actually manages to pick up a lot of the non-lens color, so this photo has been edited to more accurately reflect the perceived image.

A superior (but more logistically difficult) implementation:

It would also be possible to implement this same system with polarized glasses (as were used for some 3D TVs in the early-to-mid 2010s).

This would have the advantage of providing full color, but the disadvantage of not being compatible with a standard conference room projector. Additionally, you would be limited to two different presentations, rather than 3.

PROS: Improves your presentations by letting you tailor the presentation slides to multiple categories of audience members.

CONS: Greatly increases the amount of time required to make a presentation!

Are you hunched over your laptop while you give a presentation? Save both your posture and your presentation with this one incredible eco-friendly tip.

Background:

When giving a presentation on a large screen, there are two popular options for calling attention to specific areas of a slide deck:

  1. Physically gesture at the screen (or use a laser pointer, as seen in Figure 1).
  2. Use the laptop trackpad to move the mouse pointer / arrow around.

The issue:

The trackpad method—which requires the presenter to hover around their laptop—usually makes for a less engaging presentation, but it’s the only option for a presentation that requires real-time interaction.

So far, there’s been no way to combine the best of both worlds: 1) the direct-pointing of the laser pointer and 2) the ability to affect the on-screen user interface elements.

 

laser-remote

Fig. 1: Presentation remotes often consist of a slide advance button, a “back” button, and a laser pointer. Some of them also have a gyroscopic mouse, but this feature usually controls awkwardly at best.

Proposal:

Until now, that is!

In this proposal, the presentation remote (and laser pointer) will allow the user to point the laser at an element on the screen (say, a “play video” button), click a button on the remote, and have the on-screen element respond (in this case, playing the video).

The system works as follows:

  • The presentation remote is paired to the presenter’s laptop already, in order to allow the slide advance button to work. This is a normal feature of all presentation remotes.
  • The remote also gets a “reference” image of what’s on the laptop screen at the exact moment. This doesn’t have to be high-resolution; the remote just has to know generally what the screen looks like, updated a few times per second.
  • The remote also also contains a camera, so it can see what its laser pointer is pointing at.
  • So when the presenter points a laser at the large presentation screen, the remote now knows exactly what element the laser is hitting, since it can compare the camera image to the reference image of what’s on the laptop.

This allows the user to essentially turn the presentation screen into a giant touchscreen.

For a touch-aware operating system (e.g. iOS, Android, or Microsoft Windows), this would require no additional software support beyond sending a simulated touch event at the laser-pointer-pointed-at location.

laser-pointer-touchscreen

Fig. 2: The remote has a camera in it, so it can compare what it’s pointing at to the “reference” image from the presenter’s laptop: if the images mostly match, the remote can figure out exactly what the laser pointer is pointing at.

Conclusion:

If you thought it was TOO EASY to set up a presentation these days, this new and complex system will guarantee at least 15 minutes of “wait… hang on, I think I’ve got it working…. no, huh. Is it input 1, or input 2?” at the beginning of every presentation.

PROS: Prevents deforestation by reducing the number of wooden presentation pointers that will be manufactured.

CONS: May reduce deforestation so much that plants grow rampantly across the globe, killing all animal life and depleting the atmosphere of carbon dioxide. All because you couldn’t be bothered to walk over to your laptop to move the mouse!!!

As an audience member: Never be bored in a meeting or lecture again! As a presenter: Never wonder when to advance to the next slide again, all thanks to this one incredible PRESENTATION SLIDE DECK APP!

The issue:

Sometimes, it’s hard to tell how quickly to go through a presentation. Too fast, and the topics might not be covered in enough detail. Too slow, and everyone gets bored.

Proposal:

Normally, the ability to advance slides is reserved only for the person who is giving the presentation.

But here, the audience members also have the ability to vote on whether or not to advance the current slide early (Figure 1).

Specifically:

  1. Members of the audience have a phone app (or connect to a web site) with a giant “SKIP CURRENT SLIDE” button on it.
  2. If enough audience members press the “SKIP” button, the slide advances to the next one.
  3. The presenter cannot go back to a skipped slide.

Fig. 1: Top: The presentation screen. Bottom: three phones of audience members. The phone app simply consists of a single “SKIP” button (the arrow at the bottom), which becomes a checkmark when the user has voted to skip the slide. When enough users have pressed the “SKIP” button, the slide automatically advanced, regardless of the wishes of the person giving the presentation.

PROS: Makes meetings interactive! Prevents the audience from getting bored.

CONS: May make it TOO easy for your corporate rivals to sabotage your presentations by skipping your slides at random times.