Texture Quality - what affects this?

[theFinn01]

I'm wondering if the camera angle relative to the subject (and thus to the resulting normal of the constructed face(s)) makes a significant difference in the quality of the pixels that get mapped onto that face.

Like if you took photos at 90 degrees to the surface of, say, a wall, and modeled that, but then also repeated the process but angled the camera at some angle other than 90 to the surface (say, 70 or 60 degrees) - does the software do more interpolating of the texturing pixels as the camera angle (relative to the face) moves away from 90 degrees?

I'm just trying to get a sense of how the textures get mapped to the faces, and how to optimize that process during the shoot.

[theFinn01]

It looks like the "Mosaic" blending mode accounts for cameras whose view lies along the face normal. This might answer my question.

By that logic, what does the "intensity" refer to in Max/Min Intensity blend modes? Is the "intensity" a value like "point confidence" where "max intensity" is like "max confidence"?

[Bzuco]

I think Metashape is trying to find the cameras taken at close to the 90 degree at first, then if not found, the distance and angle of other cameras are taken into account for the mapped polygon.
From my experiences, surfaces taken only from obliques angles, have slightly blured textures and also lower texel density. Surfaces taken also from penperdicular direction are without issues.

I always taking photos also from oblique angles ...it is useful later in my workflow and I think it is also good in depth map filtering process.

[theFinn01]

Yeah I think that makes sense. I'd still like to hear from anyone that knows what the term "intensity" refers to.

[James]

I'd still like to hear from anyone that knows what the term "intensity" refers to.

I believe it's pixel 'brightness'.

So of all the source photos that cover any given point on the model, it will choose the source photo that is brightest at that point, or for min intensity it will choose the darkest.

But I've never found a good use for it.

Another good reason to take your photos perpendicular to the surface you are shooting is that you will get more of your surface in the region of the focal plane.