The first measure of a set of color filters (as opposed to individual color filters), which later came to be known as the Vora value. was proposed in [5,12,13], and was applied to filter design in [4,11]. A sensitivity analysis of the measure was performed in [3] and [3,4] used to fabricate filters in [11]. A digital camera simulator and procedures for calibrating color cameras were described in [2,8,9,14,15]. The importance of orthogonality in color recording filters was described in [1], and [8] used the results of [1] to explain why second generation digital cameras that used CMYG (complementary) filters produced far worse image quality than first generation cameras which used RGB (primary) filters. Orthogonality was one of the criteria used to compare filters in [6].

The work on measure, design and sensitivity formed my doctoral dissertation [17], was partially supported by Eastman Kodak, and was performed in collaboration with my adviser, H. Joel Trussell. The experimental work applying these ideas was done in collaboration with Larry Iwan. The work on digital camera simulation was performed at Hewlett-Packard Labs., in close collaboration with David H. Brainard (then of UCSB, now at Penn) and my then manager, Joyce E. Farrell. The work on orthogonality was single-author work, while applications involved collaborations with Cormac Herley, Richard L. Baer, William D. Holland and Jack Holm.

• Journal Publications
  1. Poorvi L. Vora. Inner products and orthogonality in colour recording filter design. IEEE Trans. Image Proc , vol. 10, no. 4, pp. 632-642, Apr. 2001²
  2. Poorvi L. Vora, Joyce E. Farrell, Jerome D. Tietz, David H. Brainard. Image Capture: Simulation of Sensor Responses from Hyperspectral Images. IEEE Trans. Image Proc , vol. 10, no. 2, pp. 307-316, Feb. 2001³
  3. Poorvi L. Vora and H. Joel Trussell. Mathematical Methods for the Analysis of Color Scanning Filters IEEE Trans. Image Process., vol. 6, no. 2, pp. 321-327, Feb. 1997.
  4. Poorvi L. Vora and H. Joel Trussell. Mathematical Methods for the Design of Color Scanning Filters IEEE Trans. Image Process., vol. 6, no. 2, pp. 312-320, Feb. 1997.
  5. Poorvi L. Vora and H. Joel Trussell. Measure of goodness of a set of color scanning filters. Journal of the Optical Society of America-A, vol. 10, no. 7, pp. 1499-1508, July 1993.
  
  
• Conference Publications
  6. Richard L. Baer, William D. Holland, Jack Holm, Poorvi Vora. A Comparison of Primary and Complementary Color Filters for CCD-based Digital Photography. Proceedings, IS\&T/SPIE Conference on Sensors, Cameras, and Applications for Digital Photography, San Jose, CA, 27 January 1999, vol. 3650, pp. 16-25.
  7. Poorvi L. Vora and Cormac E. Herley. Trade-offs between color saturation and noise sensitivity in image sensors. Proc. of the Int. Conf. Image Proc., Chicago, Oct. 1998.
  8. Poorvi L. Vora, Joyce E. Farrell, Jerome D. Tietz, David H. Brainard. Linear models for digital cameras. Proceedings, IS&T's 50th Annual Conference, 18-23 May 1997, Cambridge, Massachsetts, pp. 377-382.
  9. Poorvi L. Vora, Michael L. Harville, Joyce E. Farrell, Jerome D. Tietz, David H. Brainard. Image capture: synthesis of sensor responses from multispectral images. Proceedings, SPIE and IS&T conference on Color Imaging: Device-Independent Color, Color Hard Copy, and Graphic Arts II, vol. 3018, pp. 2-11, 1997.
  10. Poorvi L. Vora, H. Joel Trussell and Lawrence Iwan, Design Results for a Set of Thin Film Color Scanning Filters, IS&T/SPIE Symposium on Electronic Imaging, Science and Technology, San Jose, CA, 6-10 Feb. 1995.
  11. Poorvi L. Vora, H. Joel Trussell and Lawrence Iwan, A Mathematical Method for the Design of Color Scanning Filters, IS&T/SPIE Symposium on Electronic Imaging, Science and Technology, San Jose, CA, 31 Jan - 5 Feb. 1993.
  12. H. Joel Trussell and Poorvi L. Vora. On the Accuracy of Scanning Color Images. International Conference on Acoustics, Speech and Signal Processing, Vol. 3, pp. 161-164, 1992.
  13. Poorvi L. Vora and H. Joel Trussell, Measures of Goodness of a Set of Color Scanning Filters, Proc. SPIE and IS&T Conference on Color Hard Copy and Graphic Arts, vol. 1670, pp. 344-351 Feb. 11-Feb. 14, 1992.
  
  
• Technical Reports (other than those listed in footnotes to journal papers)
  15. Poorvi L. Vora, Joyce E. Farrell, Jerome D. Tietz, David H. Brainard>, Digital color cameras - 1 - Response Models, Hewlett-Packard Technical Report, HPL-97-53, March 1997. Abstract, Postscript,
  16. Poorvi L. Vora, Joyce E. Farrell, Jerome D. Tietz, David H. Brainard, "Digital color cameras - 2 - Spectral Response", Hewlett-Packard Technical Report, HPL-97-54, March 1997. Abstract, Postscript, pdf
• 17. Dissertation (scanned pdf, I no longer have the TeX source). Chapter 1 (including table of contents and abstract), Chapter 2, Chapter 3, Chapter 4, Chapter 5, Chapter 6,