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Determines displacements required to register an image to a reference image while allowing local, rubber sheet deformations. Displacements are computed in the CRS of the reference image, at a scale dictated by the lowest resolution of the following three projections: input image projection, reference image projection, and requested projection. The displacements are then transformed into the user-specified projection for output.
The maximum offset allowed when attempting to align the input images, in meters. Using a smaller value can reduce computation time significantly, but it must still be large enough to cover the greatest displacement within the entire image region.
projection
Projection, default: null
The projection in which to output displacement values. The default is the projection of the first band of the reference image.
patchWidth
Float, default: null
Patch size for detecting image offsets, in meters. This should be set large enough to capture texture, as well as large enough that ignorable objects are small within the patch. Default is null. Patch size will be determined automatically if not provided.
stiffness
Float, default: 5
Enforces a stiffness constraint on the solution. Valid values are in the range [0,10]. The stiffness is used for outlier rejection when determining displacements at adjacent grid points. Higher values move the solution towards a rigid transformation. Lower values allow more distortion or warping of the image during registration.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-10-06 UTC."],[[["This method calculates the displacements needed to align an image with a reference image, allowing for localized, flexible deformations."],["Displacements are determined in the reference image's coordinate system and at a resolution based on the input, reference, and requested projections."],["Users can specify a maximum offset for alignment, a projection for outputting displacements, a patch size for offset detection, and a stiffness parameter to control deformation."],["The output is an image containing the calculated displacement values, which can be used to warp or transform the input image to match the reference image."],["Using a smaller `maxOffset` value can speed up computation but must be sufficient to cover the largest displacement within the image."]]],[]]