"visual approximation" is a correct and usable phrase in written English.
You can use it to refer to an opinion or estimation that is based upon what is being seen or perceived. For example, "I can make a visual approximation of what the finished product will look like."
As for Pike, the fact that she is tall makes her interestingly of equal height with her lead, a pleasing visual approximation of their equal partnership in this morganatic marriage.
As Bloom, Mr. Fitzgerald resembles Joyce, though more muscular, while Ms. Seymour is a fair visual approximation of Nora, Joyce's uneducated wife, indispensable muse and model for Molly.
On 12 October, he tweeted "Teslaquila coming soon" and an accompanying "visual approximation" of a red and white label with the Tesla logo and a caption that stated "100 percent Puro de Agave".
Short of actually taking a tape measure and measuring distance from the specific targets, a visual approximation can be made as to whether or not the the device was correct.
The white hole is a tricky concept from theoretical physics — essentially, it's a black hole in reverse — but Ms. Mori, with the help of an astrophysicist at Kyoto University, manages to find a visual approximation.
And visual approximation.
Triglyceride and HDL levels were determined using enzymatic methods, and LDL levels were calculated using the Friedewald equation (Friedewald et al. 1972); folate and selenium intake were estimated based on 24-hr diet recall involving two- and three-dimensional visual aids for portion approximation.
The second part of the talk will present a new model of foveated rendering: the NeuroFovea model which produces approximations of visual metamers via feed forward foveated style-transfer networks.
Functionally these interactions allow to extract edges and ridges, providing an edge-based approximation of the visual information.
Visual hull is an outer approximation of the observed solid constructed as the intersection of the visual cones associated with all the input cameras [26].
For example, to a first approximation, the primary visual cortex (V1) has a periodic-like microstructure on the millimeter length scale, reflecting the existence of various stimulus feature maps.
