A process for checking the quality of logs, each log having a front surface (2), a rear surface (6) and a lateral surface (3). In the process, the quality check being carried out by means of a visual examination of the outer appearance of the logs (1). The process also comprising the operating steps of obtaining a first flat photographic representation (7) which represents the flat extension of the lateral surface (3) of the log (1), and if necessary a second flat photographic representation (4) which represents the front surface (2) of the log (1), and a third flat photographic representation (5), representing a rear surface (6) of the log (1). Finally, the quality of the log (1) is evaluated by means of an examination of the photographic representations (4), (5), (7).