Apparatus and method of estimating values from images

An apparatus comprising:

• a first optical assembly to emit structured illumination toward a target, the first optical assembly including:
• a light emitting assembly,
• a first phase mask to impart a first pattern to light emitted by the light emitting assembly,
• a second phase mask to impart a second pattern to light emitted by the light emitting assembly, and
• a phase adjustment assembly to adjust a phase of light structured by the first phase mask and the second phase mask;
• a second optical assembly, the second optical assembly including an image sensor to capture images of the target as illuminated by the first optical assembly;
• and
• a processor, the processor to perform the following:
• receive a plurality of images captured using the image sensor, each image of the plurality of images having a first field of view,
• define a window, the window defining a second field of view representing a portion of the first field of view such that the second field of view is smaller than the first field of view,
• move the window in relation to each image of a plurality of images,
• capture a plurality of sub-tiles from each image of the plurality of images while moving the window in relation to each image of the plurality of images, each sub-tile of the plurality of plurality of sub-tiles representing a portion of the corresponding image of the plurality of images, the portion represented by each sub-tile of the plurality of sub-tiles being defined by the second field of view at a position corresponding to a moment at which the sub-tile of the plurality of sub-tiles is captured,
• estimate parameters associated with each sub-tile of the plurality of sub-tiles, the parameters including two or more parameters selected from the group consisting of modulation, angle, spacing, phase offset, and phase deviation,
• estimate a full width at half maximum (FWHM) value associated with each sub-tile of the plurality of sub-tiles, and
• store the estimated parameters and FWHM values in a predetermined format.