Displaying 20 results from an estimated 39 matches for "av1".
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a1
2010 Jun 21
2
Calculating a daily average
...rature per day, with
180 days. I want to find the average temperature of each day. I am
able to do this one by one, but with that many days to calculate the
average for, it will get very long. I'm sure there is a faster way to
do this, I just don't know how. What i have so far is:
av1 <- subset(ER9r, Day == 98, select = c (Depth1j:Depth0.75j))
av1 <- mean(av1 [av1>0])
av2 <- subset(ER9r, Day == 99, select = c (Depth1j:Depth0.75j))
av2 <- mean(av2 [av2>0])
av3 <- subset(ER9r, Day == 100, select = c (Depth1j:Depth0.75j))
av3 <- mean(av3 [av3>0])
av4 &...
2017 Oct 02
1
NHW Project - AOM AV1 comparison
...re you get your life on it.
> Just my 2c worth.
>
> Best Regards,
> Silvia.
>
> On 2 Oct. 2017 9:46 am, "Raphael Canut" <nhwcodec at gmail.com> wrote:
>
> Hello,
>
> Just a very quick message.
>
> I have seen the results of the last version of AOM AV1 on this page:
> http://wyohknott.github.io/image-formats-comparison/ , and AOM AV1 is now
> exceptional! -What I also like is that it has a good neatness-.The NHW
> Project can not compete.The only advantage of the NHW Project is that it is
> ultra fast, ultra low-power consumption (and...
2019 Jan 27
0
new -l16 "extreme" compression quality setting
...15 quality setting whereas files size is
smaller.I notably find this new -l16 quality setting better than x265
(HEVC).
More at: http://nhwcodec.blogspot.com/
We can still save 2.5KB per .nhw compressed file.
I however know that this work is hopeless because the industry will soon
standardize AOM AV1 (AVIF) as the new image compression codec.I have also
read on twitter that the new JPEG XL standard will be based on AOM AV1.I
could not test AOM AV1 but I guess that if the Alliance for Open Media
never answered me it's because AOM AV1 is better than the NHW Project.
Anyway I wanted to remind...
2004 May 27
2
ANOVA and contrasts
...19.0, 18.6, 22.8, 19.4, 18.8, 19.2, 19.8, 21.4, 22.8, 21.3)
df = data.frame(r, e, y)
attach(df)
par(mfrow=c(2,1))
interaction.plot(r, e, y, col = 'blue', ylab = 'y', xlab = 'r')
interaction.plot(e, r, y, col = 'blue', ylab = 'y', xlab = 'r')
av1 = aov(y ~ r*e)
av2 = aov(y ~ r/e)
efR_E = summary(av2, split = list('r:e' = list('e1 vs e2/r1' = 1, 'e1 vs
e2/r2' = 2, 'e1 vs e2/r3' = 3)))
av3 = aov(y ~ e/r)
efE_R = summary(av3, split = list('e:r' = list('r/e1' = c(1,3), 'r/e2' =...
2019 Jun 21
3
support free WEBP images in Opus files
WebP (imagepart of VP9) is better then JPG
AVIF (imagepart of VPX/AV1) is better then HEIF
please support in OPUS file for album arts
more then JPG and PNG...
WebP and AVIF are free imageformats can store multiple images
thats good for the problem with METADATA_BLOCK_PICTURE
only can store one file.
i try to push some devs of player and converter to support this t...
2016 Aug 16
0
NHW codec
Hello,
I don't have advanced on the NHW codec, but now, as a lot of people, I am
following the AOMedia AV1 codec.Just a (late) update of my previous post,
there won't be problem in AOM AV1 with the CABAC scheme, as the codec will
use Daala's multi-symbol entropy coder and/or ANS.That's great! I have even
read on the wiki page, that AV1 will use Daala's PVQ as quantization
scheme.Wow.
Al...
2004 May 26
0
R: Help (two-way analysis of variance with contrasts)
...19.0, 18.6, 22.8, 19.4, 18.8, 19.2, 19.8, 21.4, 22.8,
21.3)
df = data.frame(r, e, y)
attach(df)
par(mfrow=c(2,1))
interaction.plot(r, e, y, col = 'blue', ylab = 'y', xlab = 'r')
interaction.plot(e, r, y, col = 'blue', ylab = 'y', xlab = 'r')
av1 = aov(y ~ r*e)
av2 = aov(y ~ r/e)
efR_E = summary(av2, split = list('r:e' = list('e1 vs e2/r1' = 1, 'e1 vs
e2/r2' = 2, 'e1 vs e2/r3' = 3)))
av3 = aov(y ~ e/r)
efE_R = summary(av3, split = list('e:r' = list('r/e1' = c(1,3), 'r/e2' =...
2004 May 26
0
Aid on two-way ANOVA with contrasts
...19.0, 18.6, 22.8, 19.4, 18.8, 19.2, 19.8, 21.4, 22.8, 21.3)
df = data.frame(r, e, y)
attach(df)
par(mfrow=c(2,1))
interaction.plot(r, e, y, col = 'blue', ylab = 'y', xlab = 'r')
interaction.plot(e, r, y, col = 'blue', ylab = 'y', xlab = 'r')
av1 = aov(y ~ r*e)
av2 = aov(y ~ r/e)
efR_E = summary(av2, split = list('r:e' = list('e1 vs e2/r1' = 1, 'e1 vs
e2/r2' = 2, 'e1 vs e2/r3' = 3)))
av3 = aov(y ~ e/r)
efE_R = summary(av3, split = list('e:r' = list('r/e1' = c(1,3), 'r/e2' =...
2021 Dec 02
1
NHW Project development
Hello,
I know there is no community around NHW, but I would have liked to know
what you would like to see improved in the NHW codec.I know its results are
not perfect for now compared to high-end AV1/VVC codecs for example, but
could be ok giving its extremely fast speed.-However on high quality
images, I notably like its good results because of its neatness.-
Regarding things to improve, there is the problem of aliasing, I have
started some quick experiments as I mainly find that aliasing app...
2021 Dec 02
1
NHW Project development
...--- On Thu, 02 Dec 2021 12:59:34 -0700 Raphael Canut <nhwcodec at gmail.com> wrote ----
Hello,
I know there is no community around NHW, but I would have liked to know
what you would like to see improved in the NHW codec.I know its results
are not perfect for now compared to high-end AV1/VVC codecs for
example, but could be ok giving its extremely fast speed.-However on
high quality images, I notably like its good results because of its
neatness.-
Regarding things to improve, there is the problem of aliasing, I have
started some quick experiments as I mainly find that...
2004 May 31
0
Doubts on anova and use of contrasts in multcomp package
...t(rep(letters[1:6], 4)) #auxiliary variable
df = data.frame(df, aux)
attach(df)
par(mfrow = c(2, 1))
interaction.plot(r, e, y, col = 'blue', ylab = 'y', xlab = 'r')
interaction.plot(e, r, y, col = 'blue', ylab = 'y', xlab = 'r')
av1 = aov(y ~ r*e)
av2 = aov(y ~ r/e)
efR_E = summary(av2, split = list('r:e' = list(
'e1 vs e2/r1' = 1, 'e1 vs e2/r2' = 2,
'e1 vs e2/r3' = 3)))
av3 = aov(y ~ e/r)
efE_R = summary(...
2021 Dec 02
1
NHW Project development
...Thu, 02 Dec 2021 12:59:34 -0700 Raphael Canut <mailto:nhwcodec at gmail.com> wrote ----
Hello,
I know there is no community around NHW, but I would have liked to know
what you would like to see improved in the NHW codec.I know its results
are not perfect for now compared to high-end AV1/VVC codecs for
example, but could be ok giving its extremely fast speed.-However on
high quality images, I notably like its good results because of its
neatness.-
Regarding things to improve, there is the problem of aliasing, I have
started some quick experiments as I mainly find that al...
2021 Dec 02
1
NHW Project development
...; <nhwcodec at gmail.com <nhwcodec at gmail.com>>* wrote ----
>
> Hello,
>
> I know there is no community around NHW, but I would have liked to know
> what you would like to see improved in the NHW codec.I know its results are
> not perfect for now compared to high-end AV1/VVC codecs for example, but
> could be ok giving its extremely fast speed.-However on high quality
> images, I notably like its good results because of its neatness.-
>
> Regarding things to improve, there is the problem of aliasing, I have
> started some quick experiments as I mainl...
2009 Jun 10
2
plot two variograms on a same graph
Hi,
I would know how to plot two variograms on a same graph. I can plot one by one but I would draw both on the same one.
Is it possible? Do i need any special package?
Thanks!
Cordialement
Damien Landais
2017 Feb 20
0
NHW Project - some advice
Hello,
Ok that's right HEVC and AOM AV1 are better than the NHW codec, even at mid
compression.I only tested my codec with quite neat images, hence the good
results, but on more blurred, more compressed images, HEVC and AOM AV1 are
definitely better, they are also exceptionnal at high compression.
So, yes that's right, the NHW codec...
2018 Apr 16
1
NHW Project - quality improvement for -l4,-l5 settings
...Update at: http://nhwcodec.blogspot.com/
I am also working on -l6 quality setting, I can simply increase
quantization for it but I am not totally satisfied with this solution for
now... Looking for more advanced processing at these compression ratios,
like an efficient denoising, as do HEVC, AOM AV1,...
Cheers,
Raphael
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2006 Feb 14
0
ANOVA: Help with SSQ decomposition and contrasts
...ar(mfrow=c(2,1))
interaction.plot(dF$r, dF$e, dF$y,
col = 'blue', ylab = 'Y', xlab = 'R')
interaction.plot(dF$e, dF$r, dF$y,
col = 'blue', ylab = 'Y', xlab = 'R')
# ANOVAs
av0 = aov(y ~ tra, data=dF)
summary(av0)
av1 = aov(y ~ r*e, data=dF)
summary(av1)
av2 = aov(y ~ r/e, data=dF)
e_r = summary(av2, split = list('r:e' = list(
'e1 vs e2/r1' = 1, 'e1 vs e2/r2' = 2, 'e1 vs e2/r3' = 3)))
e_r
av3 = aov(y ~ e/r, data=dF)
r_e = summary(av3, split = list('e:r' =...
2006 Feb 16
0
SSQ decomposition and contrasts with ANOVA
...dF = data.frame(a, b, tra, y)
# Graphic
par(mfrow=c(2,1))
interaction.plot(dF$a, dF$b, dF$y,
ylab = 'y', xlab = 'a')
interaction.plot(dF$b, dF$a, dF$y,
ylab = 'y', xlab = 'b')
# ANOVAs
av0 = aov(y ~ tra, data=dF)
summary(av0)
av1 = aov(y ~ a*b, data=dF)
summary(av1)
av2 = aov(y ~ a/b, data=dF)
b_a = summary(av2, split = list('a:b' = list(
'b1 vs b2/a1' = 1, 'b1 vs b2/a2' = 2, 'b1 vs b2/a3' = 3)))
b_a
av3 = aov(y ~ b/a, data=dF)
a_b = summary(av3, split = list('b:a' =...
2016 Mar 24
1
NHW codec - progress 2
Hello,
Just a quick message to correct what I have said in my previous post.It
finally seems not that easy to code small wavelet coefficients to have a
good precision, and SPIHT is certainly a very good algorithm for that, -and
I know there are SPIHT experts that can make very good SPIHT-based
codecs-.I have chosen a new and different approach, the multistage residual
coding, so I will try to
2017 Nov 27
2
NHW Project - speed comparison with x265
...HW codec
and x265 are on par, sometimes more neatness is better, sometimes more
precision is better, and a lot of improvements remain to be done for the
NHW codec.
If there are engineers from mobile device companies on this forum, could
you consider the NHW Project or is it too late it will be AOM AV1 or HEVC
despite their high power consumption?
Monty, would it be possible that the NHW Project has a Xiph.org page to
encourage and boost its development?
Any answer welcome!
Cheers,
Raphael
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