# BoundingRectangle

Determines a bounding rectangle around a specified (indexed) blob. The function finds a rectangle that encloses all points of a blob based on the given function inputs.

## BoundingRectangle Inputs

Parameter | Description
--- | ---
Blobs | Must reference a spreadsheet cell that contains a valid Blobs data structure returned by the DetectBlobs, FindBlobs, or SortBlobs function.
Index | Zero-based index of the blob in the blob structure.
Alignment | Alignment for bounding rectangle.
0 = Blob Coordinate Frame (default) | Specifies that the rectangle be at the same angle as the blob angle. Note: The angle of the blob can be returned by the GetAngle function.
1 = Image Coordinate Frame | Specifies the rectangle that best fits the blob at an angle of 0°.
2 = User Coordinate Frame | Specifies the rectangle that best fits the blob at the angle used by the Angle parameter.
Theta | Specifies the desired angle (-360 to 360) at which to find the bounding rectangle.
Padding | Specifies the amount of amount of space, in pixels, between the blob and the rectangle.
Width | Specifies the amount of amount of space, in pixels, (0 to ((image width/ 2) – 1)) between the left and right side of the blob and the rectangle.
Height | Specifies the amount of amount of space, in pixels, (0 to ((image height / 2) – 1)) between the top and bottom of the blob and the rectangle.
Show | Specifies the display mode for BoundingRectangle graphical overlays on top of the image.
0 = hide all (default) | All graphics are hidden, except when the cell containing the BoundingRectangle function is highlighted in the spreadsheet.
1 = result graphics only | The bounding rectangle region will be displayed at all times.

## BoundingRectangle Outputs

Returns | A Region data structure that defines the best bounding rectangle from the indexed blob, or #ERR if any of the input parameters are invalid.
Results | When the function is initially inserted into a cell, the following Structures Vision Data Access functions are automatically inserted into the spreadsheet to create the result table:
Label | Function | Description
X | GetX(Region) | The X offset of the origin of the region, in image coordinates.
Y | GetY(Region) | The Y offset of the origin of the region, in image coordinates.
Width | GetWidth(Region) | The dimension along the X axis of the region.
Height | GetHeight(Region) | The dimension along the Y axis of the region.
Angle | GetAngle(Region) | The orientation, in image coordinates.