The invention discloses a multi-view-based three-dimensional reconstruction
model quality evaluation method and
system and a medium, and belongs to the field of multi-view three-dimensional reconstruction
model quality evaluation. Comprising the following steps that a model generated through multi-view three-dimensional reconstruction is obtained, and the surface of the model is a Lambert
body surface; the rendering equation of the Lambert
body surface is converted into a point multiplication form of an incident light spherical
harmonic coefficient and a surface transmission characteristic spherical
harmonic coefficient, and the surface transmission characteristic is a product of a binary visible function and a geometric cosine term; the real
irradiance of the surface of the reconstruction model is reversely deduced through the
pixel intensity of the multi-view image; based on the incident light spherical
harmonic coefficient, calculating the reconstruction
irradiance of the reconstruction model by using a spherical
harmonic coefficient linear combination equation; if the difference value between the reconstruction
irradiance gradient and the real irradiance gradient between any two points in the model is greater than a preset threshold value, determining that a
geometric error exists in a three-dimensional reconstruction result between the two points; according to the method, which parts of the reconstruction model have errors can be accurately judged.