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Table 2 PSNR obtained by different 8 × 8 transform matrices

From: Area and power efficient DCT architecture for image compression

Transform

Lena

Boat

Goldhill

Barbara

Lighthouse

Mandrill

Grass

SDCT[17]

47.6842

48.0605

47.3815

47.7712

48.0659

47.1800

47.0199

Bouguezel et al.[19]

46.1432

46.5150

45.7904

46.1774

46.5060

45.6001

45.4208

Bouguezel et al.[21]

38.4446

38.7755

38.1416

38.4739

38.7539

37.8809

37.7553

Bouguezel et al.[22]

50.7247

51.0442

50.3861

50.7648

51.0748

50.1816

50.0178

Bouguezel et al.[23] (a = 1)

39.1987

39.5451

38.9039

39.2220

39.5325

38.6401

38.5118

Senapati et al.[26]

40.0021

40.247

39.6411

39.7347

40.0654

38.9019

38.8482

Cintra and Bayer[24]

40.3542

40.5915

39.9636

40.3566

40.7288

39.6412

39.4864

Bayer and Cintra[27]

40.4921

40.8259

40.1348

40.5130

40.8217

39.9135

39.7726

Transform in[29]

42.5718

42.9205

42.2187

42.6054

42.9414

42.0134

41.8338

Transform in[30]

41.1196

41.4667

40.7955

41.1598

41.4880

40.5666

40.3979

Proposed transform

41.7576

42.1115

41.4527

41.7853

42.1274

41.1899

41.0367