noise-reduction
noise-reduction


Author Comment Last activity Moderation
claerity " The pandemic has changed our way of working. Most of us work with common web conferencing software like Google Meet, Microsoft Teams, and Zoom to..." | Read more » almost 2 years ago
dangalgamesonline "thank for sharing this post " | Read more » over 2 years ago
stoft "@Warren, thanks for the suggestions. Take a look (above) at the two new plots which replace the one(s) you referenced. You're right, the new ones m..." | Read more » almost 8 years ago
warren "Great post! I love how you so clearly stated some of the conclusions. A few thoughts: maybe I missed this, but to @viechdokter's comment, are th..." | Read more » almost 8 years ago
stoft "Or, they are all 'bad' (noisy) to some degree ;-) The sharpness of the peak is still mostly a factor of slit, mechanical rigidity, being light-tigh..." | Read more » almost 8 years ago
viechdokter "Looks like at least there are no "bad" pixels as they all show about the same amount of noise. The time averaging seems to achieve a very sharp-pe..." | Read more » almost 8 years ago
stoft "Actually, you need several additional pieces for SWB: 1) average 3-5 parallel lines, 2) monitor stability and take data until it IS stable or times..." | Read more » almost 8 years ago
stoft "Ideally, the user would select a "stable" ('smooth' or 'broad peak') region to monitor and then the software would take samples (and average) while..." | Read more » almost 8 years ago
warren "Excellent; so we'll think about timeframe plus # of samples. I think we could prompt people in the interface to "ensure stable reading" during a fe..." | Read more » almost 8 years ago
stoft "Yes, I'd agree that time averaging would help and, if possible, it sould be the default to reduce this noise component. I do not have 30 fps data, ..." | Read more » almost 8 years ago
warren "Great analysis. Based on this, I wonder if we should more strongly encourage people to do live capturing, and to have a time averaging default sett..." | Read more » almost 8 years ago
warren "Followup; this is kind of neat; this graph shows the amount of noise removed: " | Read more » about 8 years ago
stoft "Yes, the flexibility is good and yes, that plot is better because it doesn't alter what is real and clearly shows the effect of just cutting off th..." | Read more » about 8 years ago
warren "Well, i'm not saying this is an important step in any particular analysis -- just that you can do operations like this easily with the transform to..." | Read more » about 8 years ago
stoft "Ah yes, the new plots are there. However, the entire shape of the spectra has been shifted so the ratios between peaks are thus different from the ..." | Read more » about 8 years ago
warren "Fetching multiple pixel rows is possible with the spectrum.imgToJSON() method in the new v2 API: https://github.com/publiclab/spectral-workbench/b..." | Read more » about 8 years ago
warren "As to time-averaging, I think it'd be pretty easy to implement, but would ONLY work if a spectrum is really vertically aligned -- so no uploaded sp..." | Read more » about 8 years ago
warren "Hi, Dave - try reloading the page - i briefly edited the spectrum while chasing a bug, so you may have seen it in the wrong state -- tell me what y..." | Read more » about 8 years ago
stoft "I'm confused by the two plots. The 'noisy' plot doesn't have the signal so I'm guessing it's an average of what is left after chopping off anything..." | Read more » about 8 years ago
warren "Note: If this looks good, I can package it up as a "noise reduction" tool in its own right -- the Transform operation may enable us to quickly crea..." | Read more » about 8 years ago