Questions tagged [id-mask]

The ID mask node will use the Object Index pass to produce an anti-aliased alpha mask for the object index specified. The mask is opaque where the object is, and transparent where the object isn't.

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Get image pixels from multiple viewer nodes

For Blender 2.81 and Cycles render. I want to access all of the following data passes from a Python script: Z Normal ...
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Object/Group Instances and Pass Index

For Post Production in the Compositor, I heavily rely on using Object/Material Index masks. Normally, I select a single object and then give it an unique number in the Pass Index/Material Index slider ...
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135 views

ID Mask by Pass Index in bpy

New to Blender, and the documentation for bpy is throwing me for a few loops. I got a setup in the compositing layer working for my desired goal as shown: This renders an image and a color-coded mask ...
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How to mask an imported image as a plane in Blender 2.8?

I have the following scene in Blender 2.8: I imported the Blender logo as a plane (File > Import > Images as Planes ---which is a plugin---). I want to create a rectangular mask on the Blender logo ...
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realtime window into a scene

I have a realtime view into a room as a mask on a plane. All you can see of the room is through the mask /2D plane that is exported as a 3D model (.GLtf or .glb preferably) I achieve this effect in ...
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Cryptomatte material masks export

Is there a simpler way to export all separate masks of materials using open exr multi-layer format for post processing in photoshop using the exr-io plugin? I always end up in a time consuming node ...
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Movie Clip Editor Multiple Masks

New to Blender, have a quick question about masking. I am greenscreening some photos, however some areas do not cut out correctly (space between ladder notches), so I have resorted to masking and ...
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Apply OpenCV functions on blender images without saving them

I am using openCV to do some operations on images I am generating using blender. I am trying to get masks of all the images in the render then apply some openCV functions to gather some data without ...
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Material in render different to Material showing up in the IndexMA pass

I am trying to create a mask based on materials having certain nodes. In this case I want to filter any shader that uses the Glass BDSF Node, I have this object with a couple of different materials as ...
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Masking out parts of an object for compositing

I am making a model of an Arc Reactor. In the model, there are some wires and a sphere with emission material, inside a glass material to create a glow effect. Now I want to make these emitting ...
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174 views

Object outline appears when using ID Mask

I have an ID Mask, and this yellow-like line appears in my render when I'm using the ID Mask node. (The line appears around the drawers on the right side os the image) I tried using the Fast Gausian ...
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211 views

Node setup to access ID masks in Cycles?

In the compositor, there is a dedicated ID mask node where you put in the number of the mask you want, and it will output it. We can get access to ID masks in Cycles materials via the Object Info ...
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How to mask mesh using an object

I am running a cloth simulation on a human avatar. I want to hide the human mesh that is underneath the cloth and not the entire human mesh. Is it possible to do something like this using the ...