Contour Data

See the source code: Mode 0 | Mode 1 | Mode 2

Measures contour computation time on a large 2D Hubble image (8600 x 12200 pixels) across three smoothing modes: NoSmoothing (0), BlockAverage (1), and GaussianBlur (2). The elapsed time is measured between the SET_CONTOUR_PARAMETERS request and the last CONTOUR_IMAGE_DATA response with progress = 1 for all 5 contour levels.

skinparam style strictuml hide footbox title PERF_CONTOUR_DATA box "Client (Test Runner)" #EDEDED participant Client end box box "Server (Backend)" #lightblue participant Backend end box == Step 1: Open file and load initial tiles == Client -> Backend : OPEN_FILE\n(h_m51_b_s05_drz_sci.fits, hdu="0") activate Backend Client <-- Backend : OPEN_FILE_ACK Client <-- Backend : REGION_HISTOGRAM_DATA deactivate Backend Client -> Backend : ADD_REQUIRED_TILES (9 tiles) activate Backend Client -> Backend : SET_CURSOR (x=1, y=1) Client -> Backend : SET_SPATIAL_REQUIREMENTS Client <-- Backend : RASTER_TILE_DATA (9 tiles + sync start/end) Client <-- Backend : SPATIAL_PROFILE_DATA deactivate Backend == Step 2: Set contour parameters == note over Client, Backend **Timeout starts (playContour: 12,000 ms)** end note Client -> Backend : SET_CONTOUR_PARAMETERS (reset) Client -[#red]> Backend : <font color="red">SET_CONTOUR_PARAMETERS</font>\n(5 levels, smoothing_mode=<0|1|2>) activate Backend note right of Backend #FFEEEE <font color="red">Elapsed time measurement starts end note loop for each of 5 contour levels Client <-- Backend : CONTOUR_IMAGE_DATA (progress < 1) Client <--[#red] Backend : <font color="red">CONTOUR_IMAGE_DATA (progress = 1)</font> end deactivate Backend note right of Backend #FFEEEE <font color="red">Elapsed time measurement ends end note note over Client **Assert:** all 5 levels reach progress = 1 end note

  1. Frontend sends: OPEN_FILE (OpenFile)

    directory = "set_QA_performance"
file = "h_m51_b_s05_drz_sci.fits"
hdu = "0"
file_id = 0

  2. Frontend loads 9 initial tiles and sets cursor

  3. Frontend sends: SET_CONTOUR_PARAMETERS (SetContourParameters)

    file_id = 0
reference_file_id = 0
image_bounds = {x_min: 0, x_max: 8600, y_min: 0, y_max: 12200}
levels = [0.1, 0.36, 0.72, 1.09, 1.46]
smoothing_mode = <0 | 1 | 2>
smoothing_factor = 4
decimation_factor = 4
compression_level = 8
contour_chunk_size = 100000

  4. Backend streams: CONTOUR_IMAGE_DATA with increasing progress

Check 1: within the playContour timeout (12,000 ms):

  • All 5 contour levels reach progress = 1