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Multi-height flat phantoms with profile-correction: (a) Photograph of the three tissue-mimicking phantoms annotated with their optical properties determined by conventional SFDI. (b) Multi-phantom laser speckle (AC; top left) and uniform illumination (DC; bottom right) images used for si-SFDI optical property estimation. The AC data are contrast-enhanced for visualization. (c) Overlay of the optical property fractional error map onto the active stereo estimated <t>3D</t> <t>point</t> cloud of uncorrected (left column) and profile-corrected (right column). Fractional error was computed between laparoscopic si-SFDI and ground truth optical properties calculated from profile-corrected SFDI.
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Multi-height flat phantoms with profile-correction: (a) Photograph of the three tissue-mimicking phantoms annotated with their optical properties determined by conventional SFDI. (b) Multi-phantom laser speckle (AC; top left) and uniform illumination (DC; bottom right) images used for si-SFDI optical property estimation. The AC data are contrast-enhanced for visualization. (c) Overlay of the optical property fractional error map onto the active stereo estimated <t>3D</t> <t>point</t> cloud of uncorrected (left column) and profile-corrected (right column). Fractional error was computed between laparoscopic si-SFDI and ground truth optical properties calculated from profile-corrected SFDI.
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Multi-height flat phantoms with profile-correction: (a) Photograph of the three tissue-mimicking phantoms annotated with their optical properties determined by conventional SFDI. (b) Multi-phantom laser speckle (AC; top left) and uniform illumination (DC; bottom right) images used for si-SFDI optical property estimation. The AC data are contrast-enhanced for visualization. (c) Overlay of the optical property fractional error map onto the active stereo estimated <t>3D</t> <t>point</t> cloud of uncorrected (left column) and profile-corrected (right column). Fractional error was computed between laparoscopic si-SFDI and ground truth optical properties calculated from profile-corrected SFDI.
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Multi-height flat phantoms with profile-correction: (a) Photograph of the three tissue-mimicking phantoms annotated with their optical properties determined by conventional SFDI. (b) Multi-phantom laser speckle (AC; top left) and uniform illumination (DC; bottom right) images used for si-SFDI optical property estimation. The AC data are contrast-enhanced for visualization. (c) Overlay of the optical property fractional error map onto the active stereo estimated <t>3D</t> <t>point</t> cloud of uncorrected (left column) and profile-corrected (right column). Fractional error was computed between laparoscopic si-SFDI and ground truth optical properties calculated from profile-corrected SFDI.
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Multi-height flat phantoms with profile-correction: (a) Photograph of the three tissue-mimicking phantoms annotated with their optical properties determined by conventional SFDI. (b) Multi-phantom laser speckle (AC; top left) and uniform illumination (DC; bottom right) images used for si-SFDI optical property estimation. The AC data are contrast-enhanced for visualization. (c) Overlay of the optical property fractional error map onto the active stereo estimated <t>3D</t> <t>point</t> cloud of uncorrected (left column) and profile-corrected (right column). Fractional error was computed between laparoscopic si-SFDI and ground truth optical properties calculated from profile-corrected SFDI.
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Multi-height flat phantoms with profile-correction: (a) Photograph of the three tissue-mimicking phantoms annotated with their optical properties determined by conventional SFDI. (b) Multi-phantom laser speckle (AC; top left) and uniform illumination (DC; bottom right) images used for si-SFDI optical property estimation. The AC data are contrast-enhanced for visualization. (c) Overlay of the optical property fractional error map onto the active stereo estimated <t>3D</t> <t>point</t> cloud of uncorrected (left column) and profile-corrected (right column). Fractional error was computed between laparoscopic si-SFDI and ground truth optical properties calculated from profile-corrected SFDI.
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Image Search Results


Multi-height flat phantoms with profile-correction: (a) Photograph of the three tissue-mimicking phantoms annotated with their optical properties determined by conventional SFDI. (b) Multi-phantom laser speckle (AC; top left) and uniform illumination (DC; bottom right) images used for si-SFDI optical property estimation. The AC data are contrast-enhanced for visualization. (c) Overlay of the optical property fractional error map onto the active stereo estimated 3D point cloud of uncorrected (left column) and profile-corrected (right column). Fractional error was computed between laparoscopic si-SFDI and ground truth optical properties calculated from profile-corrected SFDI.

Journal: Journal of Biomedical Optics

Article Title: Speckle-illumination spatial frequency domain imaging with a stereo laparoscope for profile-corrected optical property mapping

doi: 10.1117/1.JBO.30.S1.S13710

Figure Lengend Snippet: Multi-height flat phantoms with profile-correction: (a) Photograph of the three tissue-mimicking phantoms annotated with their optical properties determined by conventional SFDI. (b) Multi-phantom laser speckle (AC; top left) and uniform illumination (DC; bottom right) images used for si-SFDI optical property estimation. The AC data are contrast-enhanced for visualization. (c) Overlay of the optical property fractional error map onto the active stereo estimated 3D point cloud of uncorrected (left column) and profile-corrected (right column). Fractional error was computed between laparoscopic si-SFDI and ground truth optical properties calculated from profile-corrected SFDI.

Article Snippet: Noisy data points were removed through a series of steps: downsampling the 3D point cloud in X Y using 2 × 2 spatial averaging, applying Golay filter smoothing with a polynomial order of 1 and frame length of 31, and fitting the result to a smooth surface using the gridfit method in MATLAB.

Techniques: