Bump channel heigth? - Page 2 - Polyloop

medeamajic · 13th January 2007, 05:46

patrick,

Thanks for the link but the images for the tutorial did not show up on my computer once the Carrara part started. I think they must be a different image format then the rest.

medeamajic · 13th January 2007, 05:49

bwtr,

I looked at the help for bump maps and the Carrara manual was not accurate. That is why I asked in the forums. Why don't you just post a few screen shot of what I want to see?

medeamajic · 13th January 2007, 05:52

I rebooted and now the images show up. Thanks again Patrick

bwtr · 13th January 2007, 06:01

I give up.

From link 14, Patricks, yours and my discussions have related to DISPLACEMENT.

As were introduced, as a better alternative to bump mapping, in my links 4 and 7.

What a lot of wasted time and effort by Patrick and myself.

bwtr · 13th January 2007, 06:09

ps. All about Bumps, page 678(688) etc in the Help is UTTERLY accurate.

medeamajic · 13th January 2007, 08:39

bwtr,

I have posted examples for many people in these forums. I figure they need a little more info than what the manual has in it. Thomas's tutorial explained in detail how to set the parameters and import the displacment maps from another program. I found it helpful. I am glad Patrick posted the link. No one is begging you to join this thread bwtr. In any thread I post I find you to be more irratating than helpful.

bwtr · 13th January 2007, 11:59

Yes Thomas has done a good job in following the steps of the Help pages 685/6(695/6).

Look forward to seeing examples of your applied learning in the Gallery.

bwtr · 13th January 2007, 12:31

As with link 4 in this thread, This is of a Photoshop Brush image used as a displacement.

medeamajic · 13th January 2007, 13:58

I doubt I will post in the gallery. I do not come to the forums to show off my work. I have posted a WIP. I usually just need advise or help. I will also post a few screen shots to help others if I can.

bwtr · 13th January 2007, 16:13

In relation to that Tutorial of Thomass', he should have done a good job because he was part of the Carrara design/build team.( Refer the Carrara and Help/Manual acknowledgements.)

A lot of the stuff in the Gallery is, with the production details,not showing off work but rather exampling the results of following image making ideas.

I certainly use those ideas of others to encourage myself both to duplicate thier efforts as a learning experience, or sometimes, maybe to try. at least, take another step forward.

It's like reading a good book or peom. Your imagination gets invigorated.

medeamajic · 13th January 2007, 20:53

I am not saying I have not seen good work in the gallery. I am saying I doubt I will post anything. There is a big difference.

julvr · 15th January 2007, 17:22

When using bump maps, you have to be careful of not using a to 'sharp' picture. If you want the appearence of bigger bumps, you have to blur the image a bit first (guassian blur of 1 pixel is usually good). Look at the two examples I posted. Checker boards and vertical/horizontal lines are especially bad for this -- Avoid using black-and-white images -- make sure you have some grey in the image.

kaga · 19th January 2007, 16:14

The 'sharp' picture doesn't get good results easily as said about julvr. I think that to blur the image a bit is a good way.

There is another way enlarging effect of the bump. It is to use 'Value(1-10000%)'.
I post the screen shot of shader.

medeamajic · 19th January 2007, 22:06

Interesting technique. Thanks for the info

julvr · 20th January 2007, 00:09

Again, using the multiplier will not have much effect on black and white (no greyscale) texture maps. It seems that the tile shader automatically enables the 'curved surfaces' option when applied to the bump map, and is thus is already a 'blurred' image. The multiplier makes the bumps 'sharper' (gives them more contrast), but does not make the bumps appear 'wider'... if that makes any sense...

John

kaga · 20th January 2007, 08:24

John, you are correct.

13th January 2007, 12:31	#28 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,097	As with link 4 in this thread, This is of a Photoshop Brush image used as a displacement. Attached Thumbnails

15th January 2007, 17:22	#32 (permalink)
julvr Vertex Join Date: Nov 2006 Posts: 25	When using bump maps, you have to be careful of not using a to 'sharp' picture. If you want the appearence of bigger bumps, you have to blur the image a bit first (guassian blur of 1 pixel is usually good). Look at the two examples I posted. Checker boards and vertical/horizontal lines are especially bad for this -- Avoid using black-and-white images -- make sure you have some grey in the image. Attached Thumbnails

19th January 2007, 16:14	#33 (permalink)
kaga Spline Join Date: Jul 2005 Location: Japan Posts: 44	The 'sharp' picture doesn't get good results easily as said about julvr. I think that to blur the image a bit is a good way. There is another way enlarging effect of the bump. It is to use 'Value(1-10000%)'. I post the screen shot of shader. Attached Thumbnails __________________ Sachiko Carrara 6 Pro / Hexagon 2

20th January 2007, 08:24	#36 (permalink)
kaga Spline Join Date: Jul 2005 Location: Japan Posts: 44	John, you are correct. __________________ Sachiko Carrara 6 Pro / Hexagon 2

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13th January 2007, 05:46	#21 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	patrick, Thanks for the link but the images for the tutorial did not show up on my computer once the Carrara part started. I think they must be a different image format then the rest.

13th January 2007, 05:49	#22 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	bwtr, I looked at the help for bump maps and the Carrara manual was not accurate. That is why I asked in the forums. Why don't you just post a few screen shot of what I want to see?

13th January 2007, 05:52	#23 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	I rebooted and now the images show up. Thanks again Patrick

13th January 2007, 06:01	#24 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,097	I give up. From link 14, Patricks, yours and my discussions have related to DISPLACEMENT. As were introduced, as a better alternative to bump mapping, in my links 4 and 7. What a lot of wasted time and effort by Patrick and myself.

13th January 2007, 06:09	#25 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,097	ps. All about Bumps, page 678(688) etc in the Help is UTTERLY accurate.

13th January 2007, 08:39	#26 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	bwtr, I have posted examples for many people in these forums. I figure they need a little more info than what the manual has in it. Thomas's tutorial explained in detail how to set the parameters and import the displacment maps from another program. I found it helpful. I am glad Patrick posted the link. No one is begging you to join this thread bwtr. In any thread I post I find you to be more irratating than helpful.

13th January 2007, 11:59	#27 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,097	Yes Thomas has done a good job in following the steps of the Help pages 685/6(695/6). Look forward to seeing examples of your applied learning in the Gallery.

13th January 2007, 13:58	#29 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	I doubt I will post in the gallery. I do not come to the forums to show off my work. I have posted a WIP. I usually just need advise or help. I will also post a few screen shots to help others if I can.

13th January 2007, 16:13	#30 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,097	In relation to that Tutorial of Thomass', he should have done a good job because he was part of the Carrara design/build team.( Refer the Carrara and Help/Manual acknowledgements.) A lot of the stuff in the Gallery is, with the production details,not showing off work but rather exampling the results of following image making ideas. I certainly use those ideas of others to encourage myself both to duplicate thier efforts as a learning experience, or sometimes, maybe to try. at least, take another step forward. It's like reading a good book or peom. Your imagination gets invigorated.

13th January 2007, 20:53	#31 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	I am not saying I have not seen good work in the gallery. I am saying I doubt I will post anything. There is a big difference.

19th January 2007, 22:06	#34 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	Interesting technique. Thanks for the info

20th January 2007, 00:09	#35 (permalink)
julvr Vertex Join Date: Nov 2006 Posts: 25	Again, using the multiplier will not have much effect on black and white (no greyscale) texture maps. It seems that the tile shader automatically enables the 'curved surfaces' option when applied to the bump map, and is thus is already a 'blurred' image. The multiplier makes the bumps 'sharper' (gives them more contrast), but does not make the bumps appear 'wider'... if that makes any sense... John