Abstract: A method of inspecting packaging welds comprises the steps of creating a light beam that produces at least one light transition (t) and acquiring a raw matrix image (B(N)) covering the light transition. For each image (B(N)) obtained, a measurement of the diffusion of the light transition is stored. For each of N successive scanning increments, the raw matrix image (B(N)) is used to create an image line in which each pixel receives as its value the measurement in the raw matrix image (B(N)) of the diffusion of at least the light transition. The at least N image lines are stored in succession to obtain a matrix image and the matrix image is analyzed to determine that the weld along said fraction is in conformity when its transverse width remains, at all points, greater than a given minimum.

Abstract: A method of inspecting packages with the help of a linear image sensor comprises the steps of: for each movement increment, cyclically acquiring a sequence of n successive image lines (l1, l2, . . . , ln), the n image lines of each sequence being obtained with exposure times (Ti) and/or lighting conditions (Ek) that are different; grouping together the image lines (l1, l2, . . . , ln) obtained in the sequences while using both the same exposure times (Ti) and the same lighting conditions (Ek) so as to obtain n? superposable images (I1, I2, . . . , In) of at least j image lines; and analyzing the n? superposable images (I1, I2, . . . , In) separately or in combination in order to determine at least one characteristic of the packages. A device for package inspection includes a process and control unit that employs the steps of the method.

Abstract: A method of inspecting packaging welds comprises the steps of creating a light beam that produces at least one light transition (t) and acquiring a raw matrix image (B(N)) covering the light transition. For each image (B(N)) obtained, a measurement of the diffusion of the light transition is stored. For each of N successive scanning increments, the raw matrix image (B(N)) is used to create an image line in which each pixel receives as its value the measurement in the raw matrix image (B(N)) of the diffusion of at least the light transition. The at least N image lines are stored in succession to obtain a matrix image and the matrix image is analyzed to determine that the weld along said fraction is in conformity when its transverse width remains, at all points, greater than a given minimum.

Abstract: The invention relates to a method of inspecting packages with the help of a linear image sensor. According to the invention the method comprises the steps of: for each movement increment, cyclically acquiring a sequence of n successive image lines (l1, l2, . . . , ln), the n image lines of each sequence being obtained with exposure times (Ti) and/or lighting conditions (Ek) that are different; grouping together the image lines (l1, l2, . . . , ln) obtained in the sequences while using both the same exposure times (Ti) and the same lighting conditions (Ek) so as to obtain n superposable images (I1, I2, . . . , In) of at least j image lines; and analyzing the n images (I1, I2, . . . , In) separately or in combination in order to determine at least one characteristic of the packages.