HDR Video a Reality

akaru writes "Using common DSLR cameras, some creative individuals have created an example of true HDR video. Instead of pseudo-HDR, they actually used multiple cameras and a beam splitter to record simultaneous video streams, and composited them together in post. Looks very intriguing."

Comments

Re:HDR?

[Prune]

Back up your statement with actual information and I will respond or retract.

Re:HDR?

[Prune]

You're a fucking idiot. I was at the University of British Columbia's graphics lab when the first prototype HDR display was built, with a static contrast ratio of 150,000:1. This was accomplished by having an array of LEDs behind the LCD panel, and the LEDs were _individually_ modulated, so that the total contrast ratio was that of the LCD multiplied by that of the LED array. Bright pixels could be as bright as staring into a light bulb, and the dark ones were completely, utterly black. The result was spun off as a company, BrightSide Technologies, which then Dolby bought.

HDR is any image, video, display, or camera sensor that contains more than 8 significant bits per pixel per channel. RAW formats of cameras that actually capture 12 bits (instead of the lowest bits being simply noise, as in most consumer cameras) _are_ HDR.

You are confusing HDR with tone mapping. Everything you have described above is tone mapping, not HDR. Tone mapping is a class of algorithms that compress the dynamic range, so that HDR is transformed to LDR. It is always lossy, and it is perceptually biased. This is why its results leave a lot to be desired. True HDR, on the other hand, is the unbiased, uncompressed representation.

Re:HDR?

[Prune]

Moreover, displays are not all of fixed range! You're a fucking idiot. Even all 8 bit per channel displays have varying actual physical range that they achieve, often expressed as their static contrast ratio; but beyond that, since HDMI got support for deep color, many displays handle 10 bit per channel.