Wave profile measurements are important for computing wave characteristics and for studying the aqueous boundary layer formed beneath surface waves. The measurement technique presented here made use of digital imagery and a detection algorithm referred to as the variable threshold method. The technique can measure wind generated waves as short as 10 pixels (1.44 mm) in wavelength. The average r.m.s. quantization error was found to be ±0.29 pixels (±0.04 mm) using simulated wave profiles and the average bias error was estimated to be 0.07 pixels (0.01 mm) from real still water profiles. The magnitude of all other types of random errors was estimated to be approximately ±0.64 pixels (±0.09 mm) using real wind wave profiles. A series of morphological operations, used to correct for non-uniform seed densities, improved the accuracy of the detected wave profiles by a factor of five. The variable threshold method detected real wind wave profiles 3.5 times more accurately than the standard constant threshold method and had total r.m.s. errors that ranged from ±0.7 (±0.1 mm) to ±1.1 (±0.16 mm) pixels.
Experiments in Fluids – Springer Journals
Published: Nov 12, 2006
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera