1. Date of download: 5/31/2016 Copyright © 2016 SPIE. All rights reserved. Image formation in convex lens. Figure Legend: From: Shape from focus using principal component analysis in discrete wavelet transform Opt. Eng. 2009;48(5):057203-057203-9. doi:10.1117/1.3130232

2. Date of download: 5/31/2016 Copyright © 2016 SPIE. All rights reserved. Sample images: (a) simulated cone; (b) TFT-LCD color filter; (c) planar object; and (d) real cone. Figure Legend: From: Shape from focus using principal component analysis in discrete wavelet transform Opt. Eng. 2009;48(5):057203-057203-9. doi:10.1117/1.3130232

3. Date of download: 5/31/2016 Copyright © 2016 SPIE. All rights reserved. Algorithm analysis: (a) Original intensities of neighborhood pixels for object point (200,200) of simulated cone; (b) normalized energies of wavelet components; (c) transformed data into eigenspace; and (d) variance percentage occupied by each component in eigenspace. Figure Legend: From: Shape from focus using principal component analysis in discrete wavelet transform Opt. Eng. 2009;48(5):057203-057203-9. doi:10.1117/1.3130232

4. Date of download: 5/31/2016 Copyright © 2016 SPIE. All rights reserved. Focus measure curves fitted to Gaussian model: (a) simulated cone object point (200,200); (b) TFT-LCD color filter object point (150,150); (c) planar object point (100,100); and (d) real cone object point (90,90). Figure Legend: From: Shape from focus using principal component analysis in discrete wavelet transform Opt. Eng. 2009;48(5):057203-057203-9. doi:10.1117/1.3130232

5. Date of download: 5/31/2016 Copyright © 2016 SPIE. All rights reserved. Reconstructed 3-D shapes of test objects: (a) and (b) simulated cone; (c) and (d) TFT-LCD color filter; (e) and (f) planar object; (g) and (h) real cone. (Color online only.) Figure Legend: From: Shape from focus using principal component analysis in discrete wavelet transform Opt. Eng. 2009;48(5):057203-057203-9. doi:10.1117/1.3130232