Tutorial : Making Depth Maps with Blender [Nodes Method]

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Күн бұрын

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@frozencreed 3 жыл бұрын

First off, thanks for clarifying how to do this on newer versions of blender, it's surprisingly hard to find. Secondly, I think the reason you are having trouble seeing the regular depth map is because you added color to the backwards depth map, making it easier to see what you are doing, but also making it not really accomplish what you need for an autostereogram since the color is not actually adding to the greyscale, it is just "decoding" the depth map for your color seeing eyes. You might have better luck with the regular style depth map if you adjust the sliders without color to get a pure greyscale depth map. I'm pretty sure there's also a way to adjust the thresholds of the minimum and maximum distances that the black and white happen, which if properly adjusted make the model really pop. Anyway, just a thought, thanks a ton for the video!

@tamndonbrandson3950 3 жыл бұрын

This is perfect, it was just what I was looking for. Thank you very much, excellent tutorial.

@SaruPrasad Жыл бұрын

Hello, I had a question for you. I noticed that the left ear, and a part of the snout is still a bit dark… For my type of application when using depth maps. I would like to be able to dial down the ear and parts of the snout, so that they’re not quite as dark as they appear in your finished depth map. The problem I’m having is that I don’t seem to find any control that I can latch onto for being more specific in affecting the darkness and light of specific areas of the depth map. I was wondering if it’s possible (for example) to have a depth map (for example) for the head… And another for the tail Etc.? In this scenario, maybe I would keep my 3-D model in separate parts and not join them all together or, for example, I would join all the parts of the body and not join the head to the body. Whereby I would create a depth map for the head, and then a separate depth map for the body. And then try to make adjustments to the head so that it’s not quite as contrasty and more harmony with the lightness and brightness of the overall body. I do not make stereograms, but I work with lenticular Art, and having an accurate depth maps is something that’s very useful for me. Any ideas you could share I would appreciate. Lastly, I don’t know how blender chooses the darkness for the specific areas…but in general the contrast between the closest and furthest away areas seems to be set. Meaning, that which is closest (in a traditional depth map in Blende..) is VERY bright and that which is furthest is close to black. Getting some control over the default brightness and darkness that Blender chooses for these extreme areas of the 3-D scene of which my model is in would be helpful. Would you know anything about how to control these defaults?

@3dsf Жыл бұрын

Hey Saru, Lenticular images, that's cool. I understand wanting to target different depth regions and I have written some python to help me adjust them by setting variables. I'd prefer to continue this conversation on Reddit, I am 3dsf there. Could you ask it on the r/depthmaps subreddit?

@SaruPrasad Жыл бұрын

@@3dsf thank you. I’ve posted accordingly under the subreddit that you have mentioned. I look forward to hearing from you there when you have time to respond.

@dustinrolstad752 7 ай бұрын

I saw a tutorial where a guy had a depth output node in the compositor window. That's what I'm looking for.

@3dsf 7 ай бұрын

Interesting, could you share it if you find it again?

@Blendercage 4 ай бұрын

He chose Zpass and used the compositor to normalize it

@Oehlgar 4 ай бұрын

I’m learning how to use this output for art with my CNC. Anyone have any help?

@3dsf 4 ай бұрын

@@Oehlgar It might be pretty slow getting tips on a comment on this video, I might look more to a subreddit that follows the software your CNC uses.

@zhing836 Жыл бұрын

VERY useful thanks

@DonaldDrennan 9 ай бұрын

This would be great if Blender hadn't eliminated the depth output from the render layers node. Why is it gone now? What's the workaround? Thanks!

@3dsf 9 ай бұрын

I haven't looked around 4 yet, but does this video help kzbin.info/www/bejne/jXvXmmN5fLhoaas

@DonaldDrennan 9 ай бұрын

I later found it when I switched to Cycles and did some other things.

@alexecheverria Жыл бұрын

Thanks, but I am looking for a way to convert a depth map into a bas relief. Can you show us how?

@3dsf Жыл бұрын

As a 3d asset to be 3d printed?

@alexecheverria Жыл бұрын

@@3dsf Yes, watertight :D

@michaelkeymont501 3 жыл бұрын

Awesome! So simple, so useful...

@indieartsmidwest4042 2 жыл бұрын

Thank you so much. This was very helpful

@gabrieltoscano4440 3 жыл бұрын

Great video! Thanks for the tutorial!!!

@vox_seven Жыл бұрын

We need this now, it’s usefull for stable diffuse Ai

@tali2165 3 жыл бұрын

simple and to the point kudos to you

@tristanwagner9044 3 жыл бұрын

Thanks for this - Depth doesn't show up next to Image and Alpha for me on the node. What should I do?

@3dsf 3 жыл бұрын

Can you send me a screenshot, or the blend file? If your on Reddit, I'd prefer to be messaged there. reddit.com/u/3dsf

@SaruPrasad 2 жыл бұрын

@Pathetic but harmless Thank you for your comment. Was your solution for making Depth appear next to the Alpha and Image node correct. I experienced the same omission as Tristan, but have not yet tried your solution.

@KyleJosephBuckley 2 жыл бұрын

@@3dsf I've enabled this but the render image on the left just turns straight black... any advice? Thank you in advance!! EDIT: I just had to "re render" the image and it fixed it. :)

@3dsf 2 жыл бұрын

@@KyleJosephBuckley hey I'm going to re-make the video with better sound today, any suggestions? It'll be blender 3+ with how to turn on depth too

@KyleJosephBuckley 2 жыл бұрын

@@3dsf I think its great, I'm really new to blender and only use it when I need it for a project however, when I adjust the whites in the color ramp it adjusts the entire image and not just the object so I'm kinda stuck. Maybe you'll see what I'm talking about in the new video you make. I would also tell people that they need to re render if they're seeing just black in the top left panel.

@KyleJosephBuckley 2 жыл бұрын

Great video, I had one last question. When I adjust the "whites" in the color ramp it adjusts the entire image and not just the object. Is there something I"m doing wrong?

@3dsf 2 жыл бұрын

Your doing nothing wrong. I'll put an object further back and I'll make it small. This creates depth space between the object and the background, which allows me to be able to more easily target the object vs the background.

@KyleJosephBuckley 2 жыл бұрын

@@3dsf If I want the object to appear larger in the frame though would would I do in that scenario?

@3dsf 2 жыл бұрын

@@KyleJosephBuckley you can move it closer to the camera, in the top right, you will see a blue circle with a z in it, that will change your view. To revert back to the camera view, press the camera option below it

@ShihanChao Жыл бұрын

Hello, I want to know the acquired depth image, is the depth information stored in the pixel? If not, how to obtain the depth map whose value in the pixel is the value from the camera?

@3dsf Жыл бұрын

Yeah relative distance. If you add up int8 rgb values and devide by 255*3 you will have your relative distance. Or if you add r, g, and b as floats and devide by one.

@ShihanChao Жыл бұрын

@@3dsf Can the depth image be saved as png directly from blender? If possible, how to save it? I am using blender 3 version. Also, is it possible to save the depth image and rgb image of the same frame? I have been researching for a few days but have not saved it successfully. Could you please teach me? Thank you so much

@3dsf Жыл бұрын

@@ShihanChao yes the sum of the RGB values is the depth value. To save an image I think it is : shift s while mouse is over the output image. Or to automate it, you can set up a saved image photo folder in the nodes flow.