a box, having a top long narrow opening and a bottom long narrow opening, such that a foil article is allowed to be fed into the box via the top long narrow opening, and being also allowed to be discharged from the box through the bottom long narrow opening;

a bridge board, being disposed in the box, and comprising a power inlet and a power switch exposed out of the box;

a first light source, being disposed in the box so as to be adjacent to a first side of the box, wherein the first light source is coupled to the bridge board, and there being a first spacing existing between the first light source and a bottom side of the box;

a second light source, being disposed in the box so as to be adjacent to a second side of the box, wherein the second light source is coupled to the bridge board, and there being one said first spacing between the second light source and the bottom side of the box;

a first modular camera device, being disposed in the box so as to be adjacent to the first side of the box, wherein the first modular camera device is coupled to the bridge board, and there being a second spacing existing between the first modular camera device and the bottom side of the box; and

a second modular camera device, being disposed in the box so as to be adjacent to the second side of the box, wherein the second modular camera device is coupled to the bridge board, and there being one said second spacing existing between the second modular camera device and the bottom side of the box;

wherein the second spacing is larger than the first spacing;

wherein the first modular camera device comprises a first housing case and at least one first camera accommodated in the first housing case, and the at least one first camera being exposed out of the first housing case by a first lens thereof, such that the first lens faces to a first surface of the foil article in the box; and

wherein the second modular camera device comprises a second housing case and at least one second camera accommodated in the second housing case, and the at least one second camera being exposed out of the second housing case by a second lens thereof, such that the second lens faces to a second surface of the foil article in the box,

wherein a first electronic device is disposed in the first housing case so as to be coupled to the first camera, and the first electronic device comprises a first processor and a first memory storing an application program that includes instructions,

wherein the application program consists of a plurality of subprograms, and the plurality of subprograms comprises:

a first subprogram, being compiled to be integrated in the application program by one type of programming language, and including instructions for configuring the first processor to control the first light source to emit a first detection light for irradiating the first surface of the foil article;

a second subprogram, being compiled to be integrated in the application program by one type of programming language, and including instructions for configuring the first processor to control the first camera acquire a first image from the first surface of the foil article;

a third subprogram, being compiled to be integrated in the application program by one type of programming language, and including instructions for configuring the first processor to extract a first surface feature from the first image;

a fourth subprogram, being compiled to be integrated in the application program by one type of programming language, and including instructions for configuring the first processor to utilize a pre-trained defect reorganization model so as to determine whether there are existing any surface defects in the first surface of the foil article by matching the first surface feature with a reference defect feature; and

a fifth subprogram, being compiled to be integrated in the application program by one type of programming language, and including instructions for configuring the first processor to produce a first surface profile image of the first surface of the foil article based on the first surface feature.