Abstract: A method is provided. The method includes determining a first bump map indicative of a first set of positions of bumps. The method includes determining, based upon the first bump map, a first plurality of bump densities associated with a plurality of regions of the first bump map. The method includes smoothing the first plurality of bump densities to determine a second plurality of bump densities associated with the plurality of regions of the first bump map. The method includes determining, based upon the second plurality of bump densities, a second bump map indicative of the first set of positions of the bumps and a set of sizes of the bumps.

Abstract: A tool box contains: a first accommodation part, a second accommodation part covering with or uncovering from the first accommodation part, and at least one housing portion arranged on the first accommodation part and the second accommodation part so as to mount at least one holder, respectively. The first accommodation part or the second accommodation part includes at least one engagement portion, and each of the at least one holder has at least one contacting portion so as to retain with the at least one engagement portion of the first accommodation part or the second accommodation part. Thereby, multiple tools are removed from or secured on the at least one holder easily.