An Efficient Image Compressor for Charge Coupled Devices Camera

Figure 7

The compressive sensing process using DWT sparse representation for remote sensing.

(a) Original remote sensing image; its size is 512×512

(b) One-level DWT producing one low-frequency subband and three high-frequency subbands; each subband is 256×256

(c) The resultant measurements of HL subband; its size is 140×256

(d) The resultant measurements of LH subband; its size is 140×256

(e) The resultant measurements of HH subband; its size is 140×256

(f) Reconstructed image; the PSNR is 37.02 dB