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November 2007 MEETING
Compression 2007: The Good, The Bad, and The Ugly
San Francisco Section (physical) Meeting AND LIVE WEBCAST WITH Q&A. An on-demand version on the same HPbroadband.com website will be available after the event. Please see below for instructions.
Speaker: Bill Reckwerdt, Chief Technology Officer, Video Clarity, Campbell, CA
- 6:30 PM doors open for chat and refreshments
- 7:30 PM Presentation
Program:
Unlike even a few years ago, video and audio are made and transported with compression, and usually lots of it. We sweat bullets to create pristine digital-A/V signals that we squeeze down little pipes and dump into small bit buckets.To maintain quality as compression standards change, we should constantly measure the performance of the compression engines on which our day-to-day operations depend. Whether you're a hardware/software designer or an end user/producer, accurately measuring your compression performance can make or break your product.
"Digital" and "compression" mean making choices, such as temporal resolution vs. noise, spatial resolution vs. image size, and luminance/color range vs. gamut. Any operation, large or small, using any kind of compression in standard or high definition needs to objectively and subjectively analyze what they're putting out. How do you know how your choices are going to look to your end-users?
Video Clarity's ClearView Video Analysis system offers a set of compression analysis tools that measure much of what we need to know. ClearView gives developers, hardware designers, QA/QC engineers, video researchers, and production/distribution facilities the unique ability to play, view, record, and then objectively and subjectively analyze processed video.
ClearView allows the capture of video content from virtually any source-file or digital- or analog-video source such as SDI, HD-SDI, DVI, VGA, HDMI, component, composite, or S-video. Regardless of the input, ClearView can ingest and convert it to fully uncompressed 4:2:2 Y'CbCr, 4:4:4 RGB, ARGB, or RGBA.
For subjective analysis, multiple video sequences can be shown on the same video display in a split-screen, seamless-split, split-mirror (butterfly), or A-B (source minus result) mode. Playback supports zoom, jog, shuttle, and pause for in-depth analysis. The device also has a multi-clip playlist capability.
For objective analysis and quantitative scoring, ClearView generates a numerical value reflecting user-selectable parameters and measurements of compression quality. The system applies these metrics to each frame of a video sequence, detects anomalies outside of the threshold range, generates graphs, and logs the results. ClearView includes both No-Reference and Full-Reference metrics. When there is no comparable video, No-Reference metrics can determine anomalies such as loss of video, frozen video, loss of audio, and audio-video sync.
About our speaker:
Bill Reckwerdt, Chief Technology Officer of Video Clarity brings an interesting mix of real world experience to his technical presentation. Bill's career spans more than 20 years in the digital video and medical imaging industries, during which he developed extensive technical expertise in compression, digital transmission, and video servers. Prior to joining Video Clarity, Bill held senior positions at Hewlett-Packard, C-Cube, Vweb, and Optibase. Bill is an active member of the SMPTE, VQEG, and VPQM.Video Clarity is a member of the SMPTE & VQEG and works with other standards-based committees, including ISMA and MPEG-IF. The company collaborates with other vendors in promoting common standards and interoperability.
IMPORTANT NOTE FOR VIEWING THE ONLINE WEBCAST AND THE LATER ON-DEMAND, TIME-DELAY VERSION
Besides being a special meeting for the SMPTE-SF Section-HP is providing a new home for our regular physical meetings-HP has also generously offered us the use of their online webcast facilities. Getting to physical meetings is a challenge for many of us. The SMPTE-SF Section aims to make these technical events available to everyone, and HP is helping us reach that goal.
TO BE ABLE TO LOG ON TO THIS SERVICE, YOU WILL HAVE TO REGISTER ONLINE FIRST AND RECEIVE A RETURN-EMAIL CONFIRMING YOUR PASSWORD. We suggest you do this immediately.
To get into the HP system, you'll be asked a few questions, but you will not be put on any marketing lists or any other form of tracking. This is just how the HP tool works.
Please log on ASAP to:
http://hpbroadband.com/program.aspx?key=smpte110107
You can sign up anytime beforehand (that's best), just before or during the show, or afterward for the on-demand version. You should test your system beforehand to make sure you can run the webcast. Click the HP technical support button and follow the prompts to the system test.
If the event start time has passed and the [ATTEND] link does not appear, you may need to refresh your browser. HP tech support is available at:
http://www.hpbroadband.com/support?type=2
We thank our friends at Hewlett-Packard for generously making available their meeting facilities and Internet hosting services!
Welcome:
SMPTEsf welcomes members and friends to attend without charge.Location:
Hewlett-Packard,Building 48, Oak Room,
19483 Pruneridge Ave.,
Cupertino, CA 95014
Parking: HP Building 48 is accessible from the Wolfe/Pruneridge intersection at the I-280 "Wolfe" (northbound) exit, across the freeway from the Vallco Fashion Park shopping center. In the evening, 48's only open parking-lot entrance is at Pruneridge and Ridgeview Ct., about a block back from Wolfe. At the traffic light at Ridgeview, there's an unmanned guard shack on the north side. Enter there and go left. Take the first right into the parking lot. Continue to the end and follow to the left. Park anywhere. Building 48 is on the right. The entrance is on the west end of the building. For an HP campus map, go to: www.hp.com/hpinfo/abouthp/ebc/cup-campus.html