Uploading images

[davidpretorius]

Hi Mojo,

This excellent venus shot has a grid pattern on it

http://www.iceinspace.com.au/forum/attachment.php?attachmentid=4450

whenever i post images and everyone else, there appears to be a grid pattern across the images.

I make sure that the images are small even 8kb, but still this extra layer of file compression ?? appears.

If we are making sure we post under the limit, how come the jpeg gets altered???

thanks

dave p

[mojo]

mmmm I see no grid pattern in that excellent venus shot. But then I was outside having a smoke, minding my own business, looking at venus and I was seeing diffraction spikes with my naked eyes. Is that normal or am i going blind!?

The images you upload don't get altered. The thumbnails are created dynamically obviously but the image you upload remains unchanged.

[TidaLpHasE]

:shrug: I can't see any grid pattern ?

[aaronsadler]

I sort of see what u mean, what kind of monitor on your computer are u using. Could be the problem if others are not seeing it.

[asimov]

When I click on that venus pic Dave, it pops up in a box a bit under half the size of the monitor screen, I distinctly see the 'grid' lines...When I maximize the box, The grid pattern disappears..

[iceman]

I don't see any grid patterns? But if they're there, it's what Anthony has done while processing his images.

As mojo said, image attachments are not changed at all. The thumbnail is simply created using GD2.

[aaronsadler]

Asimov, are u using an LCD monitor.

[davidpretorius]

http://www.precons.com/iis/gallery/Images/uploadimages.jpg

the one on the left is my canopus pic once i have clicked on it from the post, the one on the right is the original jpeg file that i posted.

here is there are again if i post to the forum to see if posting makes a difference

[davidpretorius]

hmmm, i think it internet explorer, when i view the original jpeg in photoshop, it is smooth, but in internet explorer, the images is no longer smooth. i am now confused?

[asimov]

No mate, just a LG studioworks analogue. Yeah, as mentioned it depends on the compression rate versus the size of the pic.

[TidaLpHasE]

O.K. i can definately see the gris lines in the pic on the left.

[aaronsadler]

Yep, can see "grid" in both pics, when zoomed in only pic on the left.


Same as mine I think, this is a shortcut version
http://www.iceinspace.com.au/forum/attachment.php?attachmentid=4445

below is the original,

I think the problem is something to do with Internet Explorer when copying images and shortcuts to images.

[aaronsadler]

No, they're the same, sorry. :doh:

Probably something to do with compression.

[davidpretorius]

yup definately, internet explorer, i pressed on the excellent venus image from the original post (lines could be seen) , it went to a new screen and the lines were more prominent. saved the image (copyright infringed) and opened in photoshop and no lines, just a beautiful smooth curve of the planet.

right that's it.

butler...... get that idiot bill gates on the phone........what do you mean he is in a meeting, just tell him iceinspace is having a problem.......hi bill, thanks for dropping for everything to help iceinspace......old george w......well tell him you will be a little while!!!!!

[asimov]

Re: canopus pics. I see the grid on the left one only. (Internet exploder 6)

[[1ponders]]

It looks very similar to a problem I had a while ago. http://www.iceinspace.com.au/forum/attachment.php?attachmentid=557
Boiled it down to either a compression problem or electrical interference or too high gain (if bird says it I believe him :lol: see http://www.iceinspace.com.au/forum/showthread.php?t=1015&highlight=jupiter). The image on the right is pre-waveletting in registax. You can already see the tesselation. The one on the right is after waveletting. Admittedly this is an extreme example, but some of the Unwaveletted images didn't show tesselation til after waveletting

[ballaratdragons]

What I don't get is how do you guys post such large pics???? eg: Aarons bird!!

When I go to post a pic I save it in PhotoShop as a Jpeg resized down to the limit and sometimes even smaller (500 x 350) and yet often when I try to upload, the window tells me it is too large.

I then resize down to about 300 x 180. And it still won't accept it. That was up until yesterday.

Last night I tried to post a pic, same problem. I kept resizing down past 100 x 60 and it still wouldn't accept it!!!!!!!! So I gave up posting any pics.

What's the secret?

[asimov]

Hmmmm...Most of my pics are 800x600 JPGs & then compression is done in my picture publisher program until it's anything under 60K (usually I save the pic @ between 50-59K

[[1ponders]]

When you save an image for uploading in PS Ken, go into file-save for web. This opens a new window with two images. the original on the left and the reduced on the right. Also at the right are some controls for image compression and image size. I select Jpeg (from the top left dropdown box) and tick optimised. If I then take a 3072 x 2024 image reduce the size to around 600 or 800 in its largest dimension in the "image size" tag at the bottom and drop the quality to around 30 - 40% you should have no problems. In the status bar under the reduced image will be its jpeg size. Then just click save and make sure in the save as type line you select "Image"

Once that closes and you go to close the main image, unless you've made changes to it when you opened it and want to save those changes I click "no" when It asks if i want to save changes

[ballaratdragons]

Thanks Paul. Sounds like what I was doing but maybe I have been forgetting to do something. I don't remember seeing a quality tab that I can make 30-40% though. I will follow your steps again and see how I go.

[davidpretorius]

up to the right the qulaity slider is

[ballaratdragons]

By the Way, I can't see any grid pattern in the pics above!

Here is my test of posting images again.

[[1ponders]]

Well that seemed to work. :thumbsup:

[ballaratdragons]

I gave it 3 goes and it still didn't work. Then I noticed a little tab right down the bottom left of the screen.

I changed it from 100% to 50% and BINGO!

[davidpretorius]

you can make it bigger ie 2000 pixels wide and drop the quality to make the size

[ballaratdragons]

WOW! That's huge David. When you say drop the Quality, do you mean the sliding scale on the right? and what did you drop it to for that size?

[h0ughy]

is that gratuitous advertising there Ken. :poke:

i would like to thank ken for posting his image here. Without that image I wouldnt be able to thank technofinish transport for picking up Mike and the gang to go to the Ballarat Star Party :poke: Brought to you by Hold on engin head reconditioners - we shoot for the stars :poke: It is really a league of their own :rofl:

[davidpretorius]

in photshop under save for web,
under the image tab, you can change the size, make smaller or bigger.

i changed the quality to 2 out of 100 to keep the size down.

does your screen look like my screen shot

http://www.iceinspace.com.au/forum/attachment.php?attachmentid=4485

[ballaratdragons]

Yes David, same screen.

Hey Houghy, it's bordering on subliminal advertising hey! :D

GO DRAGONS!!!!!

[RAJAH235]

Ken, FWIW, here's another free resizer, etc etc, + a few other nice progs. Pacman, anyone?
http://www.faststone.org/
:D L.

[asimov]

Ok! I've been seeing this since I joined iceinspace...now It's my turn to ask a really dumb question. What does FWIW mean??

[RAJAH235]

O.K. J., H. I. T. E., I. M. "For what it's worth"! HTH. :D L.

[ballaratdragons]

Translation so John doesn't spend the next week trying to understand what you wrote Laurie:
O.K. J., H. I. T. E., I. M. "For what it's worth"! HTH. L.

OK John, Here Is The Explanation. It Means "For What It's Worth". Hope That Helps. Laurie.

[davidpretorius]

w.o.t..t.h.e..h.e.l.l..a.r.e..u..t. a.l.k.i.n.g..a.b.o.u.t?