Wow, this brings back memories. I remember using PCA for feature extraction from image data to be used in SVM based image classification. Though as I recall, PC

Wow, this brings back memories. I remember using PCA for feature extraction from image data to be used in SVM based image classification. Though as I recall, PCA added a huge tax on the processing time and provided, in comparison, a small boost in accuracy. (IIRC We split the data 4:1 into training & classification)