FeatureNearest

FeatureNearest[{elem1,elem2,…},x] gives the list of elemi to which x is nearest in a computed feature space.

• FeatureNearest[{elem1->v1,elem2->v2,…},x] gives the vi corresponding to the elemi to which x is nearest.
• FeatureNearest[{elem1,elem2,…}->{v1,v2,…},x] gives the same result.
• FeatureNearest[{elem1,elem2,…}->prop,x] gives the property prop for the elemi to which x is nearest.
• FeatureNearest[data,{x1,x2,…}] effectively gives {FeatureNearest[data,x1],FeatureNearest[data,x2],…}.
• FeatureNearest[data,x,n] gives the n nearest elemi to x.
• FeatureNearest[data] generates a NearestFunction[…] that can be applied repeatedly to different x.

Examples

(* Find nearest images *)
FeatureNearest[{img1, img2, img3, img4}, queryImage]

(* Find 3 nearest elements *)
FeatureNearest[images, queryImage, 3]

(* Create a nearest function *)
nearFunc = FeatureNearest[images];
nearFunc[newImage]

Please visit the official Wolfram Language Reference for more details.