MASCDB camera-wise data

Contents

MASCDB camera-wise data#

The files MASCdb_CAM0.parquet,*MASCdb_CAM1.parquet*,*MASCdb_CAM2.parquet* contain the attributes listed in the table below.

Parameter

Units

Type

Long name

Reference / Format / Algorithm

Global information

datetime

datetime

campaign

string

Field campaign string

pix_size

m

float

Pixel size

n_roi

int
# of ROIs
in raw image
Praz et al, 2017
Note: only one main ROI
is considered in the descriptors

cam_id

int

Camera ID: 0, 1, 2

roi_width

pix

int
x-size of crop of
the selected ROI

roi_height

pix

int
y-size of crop of
the selected ROI

roi_centroid_X

pix

int
Centroid X coord
(original image)

roi_centroid_X

pix

int
Centroid Y coord
( original image)

Particle size and area

area

m^2

float

Particle area

Table A1:1 in Praz et al, 2017

perim

m

float

Particle perimeter

Table A1:2 in Praz et al, 2017

Dmean

m

float

Mean (x/y) dimension

Table A1:3 in Praz et al, 2017

Dmax

m

float

Max dimension

Table A1:4 in Praz et al, 2017

Dmax_ori

deg

float

Orientation of Dmax

Dmax_90

m

float
Max. dimension in
orthogonal dir.
of Dmax.

Baker and Lawson 2006

D90_r

float

eq_radius

m

float

Equiv. area radius

Table A1:5 in Praz et al, 2017

area_porous

m^2

float
Porous area
(holes removed)

Table A1:6 in Praz et al, 2017

area_porous_r

m^2

float
Ratio area_porous
over area

Table A1:7 in Praz et al, 2017

Elliptical approximation: fitted ellipse

ell_fit_A

m

float

Major dimension

Table A1:8 in Praz et al, 2017

ell_fit_B

m

float

Minor dimension

Table A1:9 in Praz et al, 2017

ell_fit_area

m^2

float

Area

Table A1:10 in Praz et al, 2017

ell_fit_ori

deg

float

Orientation

Table A1:11 in Praz et al, 2017

ell_fit_a_r

float

Axis ratio (ell_fit_A/ell_fit_B)

Table A1:12 in Praz et al, 2017

ell_fit_ecc

float

Eccentricity

Table A1:13 in Praz et al, 2017

compactness

float

area / ell_fit_area

Table A1:14 in Praz et al, 2017

Elliptical approximation: inscribed ellipse (same center and orientation of fitted one)

ell_in_A

m

float

Major dimension

Table A1:15 in Praz et al, 2017

ell_in_B

m

float

Minor dimension

Table A1:16 in Praz et al, 2017

ell_in_area

m^2

float

Area

Table A1:17 in Praz et al, 2017

Elliptical approximation: circumscribed ellipse (same center and orientation of fitted one)

ell_out_A

m

float

Major dimension

Table A1:18 in Praz et al, 2017

ell_out_B

m

float

Minor dimension

Table A1:19 in Praz et al, 2017

ell_out_area

m^2

float

Area

Table A1:20 in Praz et al, 2017

Particle shape

roundness

float
Area /
circum. circle area

Table A1:30 in Praz et al, 2017

p_circ_out_r

float
Circ. circle perim/
perimeter

Table A1:31 in Praz et al, 2017

rectangularity

float
Area /
bounding box area

Table A1:32 in Praz et al, 2017

bbox_width

m

float

Bounding box width

Table A1:33 in Praz et al, 2017

bbox_len

m

float

Bounding box height

Table A1:34 in Praz et al, 2017

rect_perim_ratio

float
Bounding box perim/
perimeter

Table A1:35 in Praz et al, 2017

rect_aspect_ratio

float

  1. box aspect ratio

Table A1:36 in Praz et al, 2017

rect_eccentricity

float

  1. box eccentricity

Table A1:37 in Praz et al, 2017

solidity

float

Area/convex hull area

Table A1:38 in Praz et al, 2017

convexity

float
Convex hull perim.
/ perimeter ratio

Table A1:39 in Praz et al, 2017

hull_n_angles

int

# vertices con. hull

Table A1:40 in Praz et al, 2017

p_circ_r

float
Perimeter/ eq. area
circle perimeter

Table A1:41 in Praz et al, 2017

frac_dim_boxcounting

float

Fractal dim. (box)

Table A1:42 in Praz et al, 2017

frac_dim_theoretical

float

Fractal dim.
Table A1:43 in Praz et al, 2017
Grazioli et al, 2014

nb_holes

int

# holes inside ROI

Morphological skeleton

skel_N_ends

int
Skeleton # ending
points

Table A1:44 in Praz et al, 2017

skel_N_junc

int

Skeleton # junctions

Table A1:45 in Praz et al, 2017

skel_perim_ratio

float
Skeleton length /
perimeter

Table A1:46 in Praz et al, 2017

skel_area_ratio

1/m

float
Skeleton length
area

Table A1:47 in Praz et al, 2017

Rotational symmetry

sym_P1 … sym_P6

float
Standardized dist.
to centroid Fourier
power spec. P1…P6

Table A1:49-54 in Praz et al, 2017

sym_Pmax_id

int

ID of max. (sym_P*)

Table A1:55 in Praz et al, 2017

sym_P6_max_ratio

float

sym_P6 / max(sym_P*)

Table A1:56 in Praz et al, 2017

sym_mean

pix

float

Mean dist. to centroid

Table A1:57 in Praz et al, 2017

sym_std

pix

float
Standard deviation
dist. to centroid

Table A1:58 in Praz et al, 2017

sym_std_mean_ratio

float

sym_std / sym_mean

Table A1:59 in Praz et al, 2017

Texture operators (for ROI/particle)

intensity_mean

float

Mean pixel brightness

Table A1:60 in Praz et al, 2017

intensity_max

float

Max. pixel brightness

Table A1:61 in Praz et al, 2017

contrast

float

Contrast

Table A1:62 in Praz et al, 2017

intensity_std

float

std. pixel brightness

Table A1:63 in Praz et al, 2017

hist_entropy

float

Bright. hist. entropy

Table A1:64 in Praz et al, 2017

local_std

float
Average local (3x3)
intensity std

Table A1:65 in Praz et al, 2017

local_intens

float
Average local (3x3)
mean intensity

Table A1:66 in Praz et al, 2017

lap_energy

float

Energy of Laplacian

Table A1:67 in Praz et al, 2017

wavs

float

Sum of wavelet coeff.

Table A1:68 in Praz et al, 2017

complexity

float

Particle complexity
Table A1:69 in Praz et al, 2017
Garrett and Yuter, 2014

Haralick features

har_energy

float

Haralick energy

Table A1:70 in Praz et al, 2017

har_contrast

float

Haralick contrast

Table A1:71 in Praz et al, 2017

har_corr

float

Haralick correlation

Table A1:72 in Praz et al, 2017

har_hom

float

Haralick homogeneity

Table A1:73 in Praz et al, 2017

Riming estimation information

riming_deg_level

float
Continuous riming
degree level

Rc in Praz et al, 2017

riming_class_id

int
Discrete riming
degree class ID
Praz et al, 2017
0: undefined, 1: unrimed, 2: rimed
3: densely-rimed, 4: graupel-like, 5:graupel

riming_class_prob

float
Riming classif
probability

Praz et al, 2017

riming_class_name

string
Discrete riming
degree class name

See riming_class_id

Melting estimation information

melting_class_id

int
Discrete melting
class ID
Praz et al, 2017
0: dry, 1: melting

melting_prob

float

Melting probability
Praz et al, 2017
If rounded, it yields melting_class_id

melting_class_name

string

Discrete melting class name

See melting_class_id

Hydrometeor type estimation information

snowflake_class_name

string

Hydrometeor class name
Praz et al, 2017
See snowflake_class_id

snowflake_class_id

int
Hydrometeor
class id
Praz et al, 2017
1: small_particle, 2: columnar_crystal,
3: planar_crystal, 4: aggregate,
5: graupel, 6: columnar_planar_combination

snowflake_class_prob

float
Classification
probability

Human label information

hl_snowflake

int
Human-label
hydrometeor set
Boolean flag. If set to 1, this particle
(in this CAM view) was part of the human
labelled training set of Praz et al, 2017
for hydrometeor classification

hl_snowflake_class_id

int
Human-label
hydrometeor class
Human-labeled snowflake_class_id
for the training set of Praz et al, 2017

hl_melting

int

Human-label melting set
Boolean flag. If set to 1, this particle
(in this CAM view) was part of the human
labelled training set of Praz et al, 2017
for melting identification

hl_melting_class_id

int
Human-label
melting class
Human-labeled melting_class_id
for the training set of Praz et al, 2017

hl_riming

int

Human-label riming
Boolean flag. If set to 1, this particl
(in this CAM view) was part of the human
labelled training set of Praz et al, 2017
for riming degree estimation

hl_riming_class_id

int
Human-label
riming class
Human-labeled riming_class_id
for the training set of Praz et al, 2017

References#

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