Fig. 1. Test image of luminance masking characteristic experiment

Fig. 2. Principles of 3D imaging

Fig. 3. Test image of contrast masking characteristic experiment

Fig. 4. Experimental results of luminance masking characteristic experiment. (a) Relationship between JND and luminance; (b) relationship between JND and eccentricity angle; (c) relationship between JND and depth; (d) relationship among JND, luminance, and eccentricity angle at d=1.0; (e) relationship among JND, luminance, and depth at e=20; (f) 4D image of luminance masking characteristic experiment

Fig. 5. Experimental results of contrast masking characteristic experiment. (a) Relationship between JND and contrast; (b) relationship among JND, luminance, and contrast

Fig. 6. Noise injection distributions of different JND models. (a) Original image; (b) proposed model; (c) Ref. [4]; (d) Ref. [3]

Fig. 7. Enlarged view of central area of picture after pollution by different JND models. (a) Original image; (b) proposed model; (c) Ref. [4]; (d) Ref. [3]

Fig. 8. Hardware system architecture framework based on FPGA

Fig. 9. Hardware test platform

Fig. 10. Comparison of image compression effect and local enlarged view. (a) Original images; (b) compressed images

Table 1. Specific values of luminance masking characteristic and contrast masking characteristic experiments

Table 2. Comparison of average subjective scores of different models

Table 3. Color scale of different JNCD values

Table 4. Evaluation index and bit rate of color image compression