Table 3 Facial data distribution over several distinct emotions in augmented RAF-DB, JAFFE and CK+.

From: Improved facial emotion recognition model based on a novel deep convolutional structure

Dataset

Total no. of facial images

Dataset distribution

Image Size

Format

Train

Validation

RAF_DB

12,845

75%

25%

JPG

(100 × 100) RGB-images

JAFFE

4489

75%

25%

JPG

(128 × 128) grayscale-images

CK+

4021

90%

10%

PNG

(48 × 48) grayscale-images