Lossless and Low-Power Image Compressor for Wireless Capsule Endoscopy

Table 2

Comparison of performance with other schemes.

	Prediction mode	Average CR%		Overall PSNR (dB)
		Encoding (without clipping)	Encoding + Clipping
Proposed	1	67.0	73.2	∞ (lossless)
	2	66.3	72.6
	3	60.0	67.8
	4	72.0	76.8
	5	70.5	76.0
	6	70.1	75.7
	7	68.3	74.6
Chen et al. [14]		56.7		46.4
Xiang et al. [15]		72.7		46.8
Wahid et al. [9]		87.1		32.9
Turcza and Duplaga [10]		32.0		36.5
Lin et al. [11]		79.6		32.5
JPEG-FP [9, 25]		81.5		31.5
Hu et al. [26]		72.0 (𝑄 level = 2)		39.6
Wu and Li [27]		50.0		31.0
Dung et al. [28]		82.0		36.2