My understanding of both of those terms agrees with yours.
I think in the case of "motion parallax" it's nearly the same, though.... whether you're "moving your head" or "moving the object", in both cases the spatial relation of three things is changing: your Center of Projection, and two other things (e.g. the two sides of a soda can, or e.g. a cloud and the moon).
Now that I found someone to discuss the nerditude of detailed depth cues... why on earth would eye-flickering change the shading? Am I supposed to believe that it's because the CoP moves (because my pupil moves)? I find it implausible that moving the CoP one millimeter, on an object that's 100mm to 10000mm from the CoP, while also changing which center-surround is processing the photons from a point, can detect a difference in shading, even on highly highly specular surfaces. Can anyone explain this to me?
Actually, as far as I've read, the minor eye movements happen exactly to enable motion parallax (on the very edges of objects) even while the object is static relating to you - so it's kind of completely opposite what the original article was proposing.
That seems right. It's conceivable that microsaccades could be affected by diffraction effects in unusual situations. But it seems like shading (even specular highlights) couldn't be perceptibly affected.
I think in the case of "motion parallax" it's nearly the same, though.... whether you're "moving your head" or "moving the object", in both cases the spatial relation of three things is changing: your Center of Projection, and two other things (e.g. the two sides of a soda can, or e.g. a cloud and the moon).
Now that I found someone to discuss the nerditude of detailed depth cues... why on earth would eye-flickering change the shading? Am I supposed to believe that it's because the CoP moves (because my pupil moves)? I find it implausible that moving the CoP one millimeter, on an object that's 100mm to 10000mm from the CoP, while also changing which center-surround is processing the photons from a point, can detect a difference in shading, even on highly highly specular surfaces. Can anyone explain this to me?