Region Statistics

REGION_STATISTICS_ELLIPSE

See the source code.

This test verifies that statistics are correctly computed for ellipse regions, including regions that fall outside the image.

Tested on both M17_SWex.image and M17_SWex.hdf5.

1. Frontend sends: OPEN_FILE (OpenFile)

   directory = "set_QA"
   file = "M17_SWex.image" (or "M17_SWex.hdf5")
   file_id = 0
   render_mode = RASTER
   

2. Backend returns: OPEN_FILE_ACK (OpenFileAck)

3. Frontend sends: SET_REGION (SetRegion) for 3 ellipse regions

   Ellipse 1 (inside image):

   region_type = ELLIPSE
   control_points = [{x: 114, y: 545}, {x: 4, y: 2}]
   rotation = 0.0
   

   Ellipse 2 (rotated):

   region_type = ELLIPSE
   control_points = [{x: 83, y: 489}, {x: 4, y: 3}]
   rotation = 30.0
   

   Ellipse 3 (outside image):

   region_type = ELLIPSE
   control_points = [{x: 0, y: 486}, {x: 4, y: 3}]
   rotation = 30.0
   

Check 1: each SET_REGION_ACK should satisfy:

• SET_REGION_ACK.success = True

• SET_REGION_ACK.region_id = 1, 2, 3 respectively

4. Frontend sends: SET_STATS_REQUIREMENTS (SetStatsRequirements) for each region

   region_id = <1-3>
   stats_types = [NumPixels, Sum, FluxDensity, Mean, RMS, Sigma, SumSq, Min, Max, Extrema]
   coordinate = "z"
   

Check 2: the REGION_STATS_DATA should satisfy:

• Region 1: NumPixels = 24, Mean = 0.00772359, Min = -0.01768329, Max = 0.02505673

• Region 2: NumPixels = 18, Mean = 0.0002697, Min = -0.00590614, Max = 0.00654556

• Region 3 (outside image): NumPixels = 0, all other statistics = NaN

REGION_STATISTICS_POLYGON

See the source code.

This test verifies that statistics are correctly computed for polygon regions, including regions outside the image, sub-pixel polygons, and single-pixel polygons.

Tested on both M17_SWex.fits and M17_SWex.hdf5.

1. Frontend sends: OPEN_FILE (OpenFile)

   directory = "set_QA"
   file = "M17_SWex.fits" (or "M17_SWex.hdf5")
   file_id = 0
   render_mode = RASTER
   

2. Frontend sends: SET_REGION (SetRegion) for 6 polygon regions

   Polygon 1 (triangle):

   region_type = POLYGON
   control_points = [{x: 155, y: 552}, {x: 134, y: 498}, {x: 185, y: 509}]
   

   Polygon 2 (small triangle):

   region_type = POLYGON
   control_points = [{x: 116, y: 604}, {x: 106, y: 574}, {x: 137, y: 577}]
   

   Polygon 3 (outside image):

   region_type = POLYGON
   control_points = [{x: 556, y: 167}, {x: 547, y: 130}, {x: 577, y: 139}]
   

   Polygon 4 (large quadrilateral):

   region_type = POLYGON
   control_points = [{x: 65, y: 688}, {x: 69, y: 36}, {x: 602, y: 77}, {x: 562, y: 735}]
   

   Polygon 5 (sub-pixel triangle):

   region_type = POLYGON
   control_points = [{x: 300.2, y: 300.2}, {x: 300.2, y: 301.0}, {x: 300.7, y: 300.2}]
   

   Polygon 6 (single-pixel square):

   region_type = POLYGON
   control_points = [{x: 299.5, y: 300.5}, {x: 299.5, y: 299.5}, {x: 300.5, y: 299.5}, {x: 300.5, y: 300.5}]
   

Check 1: the REGION_STATS_DATA should satisfy:

• Region 1: NumPixels = 1265, Mean = 0.00095056

• Region 2: NumPixels = 132, Mean = -0.00073162

• Region 3 (outside image): NumPixels = 0, all stats = NaN

• Region 4 (large): NumPixels = 216248, Mean = -3.52620875e-5

• Region 5 (sub-pixel): NumPixels = 0, all stats = NaN

• Region 6 (single pixel): NumPixels = 1, Mean = -0.00115214, Sigma = 0

REGION_STATISTICS_RECTANGLE

See the source code.

This test verifies that statistics are correctly computed for rectangle regions, including rotated rectangles, regions outside the image, and full-image statistics.

Tested on both M17_SWex.image and M17_SWex.hdf5.

1. Frontend sends: OPEN_FILE (OpenFile)

   directory = "set_QA"
   file = "M17_SWex.image" (or "M17_SWex.hdf5")
   file_id = 0
   render_mode = RASTER
   

2. Frontend sends: SET_REGION (SetRegion) for 4 rectangle regions

   Rectangle 1:

   region_type = RECTANGLE
   control_points = [{x: 212, y: 464}, {x: 10, y: 10}]
   rotation = 0.0
   

   Rectangle 2:

   region_type = RECTANGLE
   control_points = [{x: 103, y: 549}, {x: 5, y: 7}]
   rotation = 0.0
   

   Rectangle 3 (rotated 300 degrees):

   region_type = RECTANGLE
   control_points = [{x: 115, y: 544}, {x: 5, y: 7}]
   rotation = 300.0
   

   Rectangle 4 (outside image):

   region_type = RECTANGLE
   control_points = [{x: 0, y: 544}, {x: 5, y: 7}]
   rotation = 300.0
   

Check 1: the REGION_STATS_DATA should satisfy:

• Region 1: NumPixels = 121, Mean = 0.00234626

• Region 2: NumPixels = 14, Mean = -0.00249511

• Region 3 (rotated): NumPixels = 35, Mean = 0.00484488

• Region 4 (outside image): NumPixels = 0, all stats = NaN

Full image statistics (region_id = -1):

Check 2: the REGION_STATS_DATA for region_id = -1 should satisfy:

• NumPixels = 216248, Mean = -3.52620875e-5, Min = -0.03958673, Max = 0.04523611