Abstract: According to one embodiment, an information processor includes a gaze area registration unit, an object registration unit, a learning unit, a work process registration unit, and an output unit. The gaze area registration unit receives registration of a gaze area. The object registration unit receives registration of an object used in work. The learning unit learns a transition in the presence or absence of the object in the gaze area or a transition in the state of the object according to the progress of the work based on a training image that contains the object. The work process registration unit receives registration of information related to work processes, which are obtained by breaking down the work into elements and defined based on the transition. The output unit outputs a verification result regarding the work processes included in the work captured, which is obtained based on learning in the learning unit.

Abstract: The surface of a cement intimate mixture filled portion in a building is tapped by a hammer, and a tapping sound thus generated is received by a micropone and converted to an electrical signal. The electrical signal representing the attenuation characteristic, which is different depending on the presence or absence of a defective unfilled portion in the cement filled portion, is sampled to obtain a maximum peak value and/or an integrated value. The maximum peak value and/or the integrated value is compared with a reference value to decide the presence or absence of a defect in the cement filled portion.