CROP_GRID

CropGridStep is a pipeline step that crops sub images out of a larger image, based on a grid. The four corner coordinates are defined as points, and come from list of point of targeted data, in the following order: top left, top right, bottom left, bottom right. The output contains a list of cropped images from the grid, in order: (row,col) = (0,0), (0, 1), ..., (0, C-1), ..., (R-1, C-1).

Configs

Descriptions

imageName

Name of the input image key from the previous step. If set to null, it will try to find any image in the incoming data instance.

pointsName

Name of the list points specifying the corners, in order: topLeft, topRight, bottomLeft, bottomRight.

gridX

The number of grid segments between (top left and top right) and (bottom left and bottom right).

gridY

The number of grid segments between (top left and bottom left) and (top right and bottom right).

coordsArePixels

If true, the lists are in pixels coordinates, not from 0 to 1.

boundingBoxName

Name of the output bounding boxes key.

outputCoordinates

If true, the two lists are returned which contains the data of grid horizontal and vertical coordinates, respectively.

keepOtherFields

If true, other data key and values from the previous step are kept and passed on to the next step as well.

aspectRatio

If set, the smaller dimensions will be increased to keep the aspect ratio correct (which may crop outside the image border).

outputName

Name of the key of all the cropped output images from this step.