node-optris

This module provides a NodeJS binding to the Evocortex Libirimager SDK. The direct binding allows to get images from Optris cameras using NodeJS. For any further information about the SDK and the functions available in the API please refers to the Evocortex documentation.

Under development

Installation

• Download the irDirectSDK from the Evocortex website
• Install the package: npm install https://github.com/FiloCara/node-optris.git

Implemented functions

direct binding name	node-optris name	description
evo_irimager_usb_init	usb_init	Initializes an IRImager instance connected to this computer via USB
evo_irimager_usb_init	tcp_init	Initializes the TCP connection to the daemon process (non-blocking)
evo_irimager_terminate	terminate	Disconnects the camera, either connected via USB or TCP
evo_irimager_get_thermal_image_size	get_thermal_image_size	Accessor to image width and height
evo_irimager_get_palette_image_size	get_palette_image_size	Accessor to width and height of false color coded palette image
evo_irimager_get_thermal_image	get_thermal_image	Accessor to thermal image by reference, Conversion to temperature values are to be performed as follows: t = ((double)data[x] - 1000.0) / 10.0
evo_irimager_get_palette_image	get_palette_image	Accessor to an RGB palette image by reference
evo_irimager_get_thermal_palette_image	get_thermal_palette_image	Accessor to an RGB palette image and a thermal image by reference
evo_irimager_set_palette	set_palette	Set RGB palette
evo_irimager_set_shutter_mode	set_shutter_mode	Sets shutter flag control mode (0:manual, 1:auto)
evo_irimager_trigger_shutter_flag	trigger_shutter_flag	Forces a shutter flag cycle
evo_irimager_daemon_launch	daemon_launch	Launch TCP daemon
evo_irimager_daemon_is_running	daemon_is_running	Check whether daemon is already running
evo_irimager_daemon_kill	daemon_kill	Kill TCP daemon

More information available in the docstrings of the node-optris.js file.

Examples

Get thermal images

// Example script to get palette image from Optris camera
const optris = require('../node-optris')

// Set you current config file path
xmlPath = "../config_file_windows.xml"
formatsPath = "../Formats.def"

// Load DLL 
sdkPath = "irDirectSDK/sdk/x64/libirimager.dll" // Define yout SDK path
optris.loadDLL(sdkPath)

optris.usb_init(xmlPath, formatsPath)

// Get w, h
let w, h = optris.get_thermal_image_size()

while (true) {
    // thermal image --> Buffer of size (w * h)
    let thermal_image = optris.get_thermal_image(w, h)
    // Buffer can now be converted to Array or base64 string

}

process.on("SIGINT", function() {
    optris.terminate()
    process.exit()
    })

Get palette images

// Example script to get palette image from Optris camera
const optris = require('../node-optris')

// Set you current config file path
xmlPath = "../config_file_windows.xml"
formatsPath = "../Formats.def"

// Load DLL 
sdkPath = "irDirectSDK/sdk/x64/libirimager.dll" // Define yout SDK path
optris.loadDLL(sdkPath)

console.log("Initialize USB communication")
optris.usb_init(xmlPath, formatsPath)

// Get w, h
let w, h = optris.get_palette_image_size()

while (true) {
    // palette image --> Buffer of size (w * h * 3)
    let palette_image = optris.get_palette_image(w, h)
    // Buffer can now be converted to Array or base64 string
}

// Handle CTRL-C to stop the script and terminate optris process correctly
process.on('SIGINT', () => {
    optris.terminate()
    process.exit()
})