An Improved Wood Recognition Method Based on the One-Class Algorithm

• Published in: Forests Vol. 13; no. 9; p. 1350
• Main Authors: He, Jie, Sun, Yongke, Yu, Chunjiang, Cao, Yong, Zhao, Youjie, Du, Guanben
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.09.2022
• Subjects: Accuracy; Algorithms; Classification; Datasets; Deep learning; Feature extraction; Identification; Identification and classification; Image acquisition; Inspection; Machine learning; Methods; Neural networks; Normal distribution; Object recognition; one-class classification; Performance evaluation; Properties; Rare species; Recall; Support vector machines; Timber; transfer learning; Wood; wood recognition; China
• ISSN: 1999-4907; 1999-4907
• DOI: 10.3390/f13091350

Wood recognition is necessary for work in the wood trade activities. The advantage of the one-class wood classification method is more generalization, and it only needs positive samples and does not need negative samples in the training phase, so it is suitable for rare wood species inspection. This paper proposed an improved method based on the one-class support vector machine (OCSVM) for wood species recognition. It uses cross-section images acquired with a magnifying glass, which uses a pre-trained VGG16 model for feature extraction, a normal distribution test for key features filtering, and OCSVM to determine the wood species. The results showed that the approach achieved a mean recall of 0.842 for both positive and negative samples, which indicates this method has good performance for wood recognition. In a negative public dataset, the negative recall reached as high as 0.989, which showed that this method has good generalization.