totalFocusingMethod Object

The totalFocusingMethod object serves as a total focusing method (TFM) process description.

Property	Type	Unit	Description
id required	integer	-	Unique id for the totalFocusingMethod object within the process
name	string	-	Custom name of the totalFocusingMethod object
signalSource	string	-	Signal used to compute the TFM, either: Analytic or Real
gain required	number	dB	Gain applied to the TFM image
referenceAmplitude	number	%
referenceGain	number	dB
rectangularGrid required	object	-	rectangularGrid object
fmcPulserIds	array	-	Array listing the ids of the pulsers used to compute the TFM image
fmcReceiverIds	array	-	Array listing the ids of the receivers used to compute the TFM image
pathName required	string	-	Wave path name, often referred to as a "mode" or "view" (e.g.: "T-T", "LL-T")
waveSet required	object	-	waveSet object
columns	array	-	columns array

rectangularGrid object

The rectangularGrid object describes the dimensions of the region of interest (ROI) used to compute the TFM.

Property	Type	Description
yImagingLimits required	object	range object
zImagingLimits required	object	range object

range object

Property	Type	Unit	Description
min required	number	m	Starting position of the grid
max required	number	m	Ending position of the grid
resolution required	number	m	Resolution of the grid

Example

"rectangularGrid": {
    "yImagingLimits": {
        "min": 0.001,
        "max": 0.025,
        "resolution": 5.1E-05
    },
    "zImagingLimits": {
        "min": 1E-05,
        "max": 0.025,
        "resolution": 8.2E-05
    }
}

waveSet object

The waveSet object describes the pathName in more details, listing the modes (or views) of the wave paths.

Property	Type	Description
pulsings required	array	Array containing the list of modes (or views) for the forward path, either: Longitudinalor TransversalVertical
receivings required	array	Array containing the list of modes (or views) for the backward path, either: Longitudinalor TransversalVertical

Example

"waveSet": {
    "pulsings": [
        "TransversalVertical",
        "TransversalVertical"
    ],
    "receivings": [
        "Longitudinal"
    ]
}

columns array

The columns array describes the time-corrected gain (TCG) parameters used for each column of the TFM image

Property	Type	Description
id required	integer	Unique column id of the TFM image
gainMap required	object	An object containing TCG points array

gainMap object

The gainMap contain the information related to the gain applied to the TFM image for the TCG.

Property	Type	Description
points required	array	TCG points array

points array

The points array lists the time-corrected gain (TCG) points, with the corresponding gain to apply for a given position in the column of the TFM image.

Property	Type	Unit	Description
position required	number	m	Vertical position of the point in the TFM ROI
gain required	number	dB	Gain in decibels

Example

"columns": [
    {
    "id": 0,
    "gainMap": {
        "points": [
        {
            "position": 0.0,
            "gain": 0.0
        },
        {
            "position": 0.0080,
            "gain": 28.8
        },
        {
            "position": 0.0150,
            "gain": 33.9
        }
        ]
    }
    },
    {
    "id": 1,
    "gainMap": {
        "points": [
        {
            "position": 0.0,
            "gain": 0.0
        },
        {
            "position": 0.0080,
            "gain": 29.3
        },
        {
            "position": 0.0151,
            "gain": 34.7
        }
        ]
    }
    },
    ...
]

Example

"totalFocusingMethod": {
    "id": 0,
    "name": "TT-L View",
    "signalSource": "Analytic",
    "gain": 20.0,
    "referenceAmplitude": 80.0,
    "referenceGain": 0.0,
    "rectangularGrid": {
        "yImagingLimits": {
            "min": 0.001,
            "max": 0.025,
            "resolution": 5.1E-05
        },
        "zImagingLimits": {
            "min": 1E-05,
            "max": 0.025,
            "resolution": 8.2E-05
        }
    },
    "fmcPulserIds": [
        0,
        1,
        2,
        3,
        4,
        ...
    ],
    "fmcReceiverIds": [
        0,
        1,
        2,
        3,
        4,
        ...
    ],
    "pathName": "TT-L",
    "waveSet": {
        "pulsings": [
            "TransversalVertical",
            "TransversalVertical"
        ],
        "receivings": [
            "Longitudinal"
        ]
    },
    "columns": [
        {
        "id": 0,
        "gainMap": {
            "points": [
            {
                "position": 0.0,
                "gain": 0.0
            },
            {
                "position": 0.0080,
                "gain": 28.8
            },
            {
                "position": 0.0150,
                "gain": 33.9
            }
            ]
        }
        },
        {
        "id": 1,
        "gainMap": {
            "points": [
            {
                "position": 0.0,
                "gain": 0.0
            },
            {
                "position": 0.0080,
                "gain": 29.3
            },
            {
                "position": 0.0151,
                "gain": 34.7
            }
            ]
        }
        },
    ...
}