Types of image

1. Visible Image:

- A visible image is captured in the range of the electromagnetic spectrum that is visible to the human eye, typically spanning wavelengths from about 400 to 700 nanometers (nm). These images resemble what the human eye sees and are often used for visual inspection and interpretation.

2. Infrared Image:

- Infrared imagery captures radiation in the infrared portion of the electromagnetic spectrum, beyond what is visible to the human eye. It is useful for applications such as night vision, heat detection, and identifying temperature variations.

3. Multispectral Image:

- Multispectral imagery is captured in multiple distinct bands or channels across the electromagnetic spectrum. Each band provides information about a specific range of wavelengths, allowing for the analysis of different characteristics of the scene, such as vegetation health or land use.

4. Hyperspectral Image:

- Hyperspectral imagery captures data in numerous narrow and contiguous bands across the electromagnetic spectrum, often with hundreds of spectral bands. This high spectral resolution allows for detailed analysis of materials and their properties in a scene, making it valuable in fields like geology and agriculture.

5. LIDAR Image:

- LIDAR (Light Detection and Ranging) imaging uses laser pulses to measure the distance to objects or surfaces. It creates highly accurate three-dimensional maps of terrain, structures, or objects by measuring the time it takes for the laser pulses to return.

6. RADAR Image:

- RADAR (Radio Detection and Ranging) imaging uses radio waves to detect and locate objects or terrain. RADAR images are particularly useful in applications like weather forecasting, aircraft navigation, and military surveillance.

7. Thermal Imagery:

- Thermal imagery captures the infrared radiation emitted by objects based on their temperature. It is used to visualize variations in temperature, making it valuable in applications such as building inspections, search and rescue operations, and monitoring industrial equipment for overheating.

Each type of imagery has its own unique characteristics and applications, making them essential tools in various fields, including remote sensing, environmental monitoring, geology, agriculture, and more.

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Supervised Classification

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Image Transformation

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Isodata clustering

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Spectral Signature vs. Spectral Reflectance Curve

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REMOTE SENSING INDICES

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Vineesh V, Geography

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