Description

Questions and Answers about Data spec or acquisition technique

Questions

Title	Size	Spatial Dimensions	Spatial Resolution (m)	Spatial Area	Spectral Dimensions	Spectral Resolution (nm)	Spectral Range (nm)	Link
FINCH	512x512x640 or 640x640x512	512x512 or 640x640	90x90	46,080x46,080 or 57,600x57,600	512 or 640	10	900-1700
Indian Pines	145x145x220	145x145	20x20	2,900x2,900	224 or 200	~10 (divide spectral range by spectral dim)	400-2500	Hyperspectral Remote Sensing Scenes - Grupo de Inteligencia Computacional (GIC) (ehu.eus)
Salinas Scene	512x217x224	512x217	3.7x3.7		224			Hyperspectral Remote Sensing Scenes - Grupo de Inteligencia Computacional (GIC) (ehu.eus)
Pavia Centre	1096x715x102	1096x715	1.3x1.3	1,424.8x	102			Hyperspectral Remote Sensing Scenes - Grupo de Inteligencia Computacional (GIC) (ehu.eus)
Pavia University	610x340x103	610x340	1.3x1.3	793x	103	4 [src]	430-860 [src]	Hyperspectral Remote Sensing Scenes - Grupo de Inteligencia Computacional (GIC) (ehu.eus)
Kennedy SC	512x614x176	512x614	18x18		176	10	400-2500	Hyperspectral Remote Sensing Scenes - Grupo de Inteligencia Computacional (GIC) (ehu.eus)
Cuprite	512x614x224	512x614			224
Botswana	1476x256x145	1476x256	30x30		145	10	400-2500	Hyperspectral Remote Sensing Scenes - Grupo de Inteligencia Computacional (GIC) (ehu.eus)
UofT HSI-301 Suburban			0.3x0.3
UofT HSI-301 Urban			0.3x0.3
UofT HSI-301 Forest			0.3x0.3

None of the datasets have the same spatial resolution or geographical range as FINCH:
- Ignore spatial/spectral resolution and focus on actual image (pixel) dimensions
Three datasets are large enough to be trimmed to FINCH size:
1. Pavia Centre
2. Kennedy SC
3. Cuprite
Next steps:
- Trim three datasets to FINCH size

What are our minimum and maximum pixel values? 0 to 1? -1 to 1? 0 to 255? What should we expect from optics? Are there any best and worst values?
- Question for Pay-Firm (ask Yong Da), → Amreen’s best guess is 0 to 255 (usually because we store in 8 bit)
- We are expected to change the 0-255 values (known as sensor values) to radiance or reflectance values (units for light? I think?) → we haven’t decided if we will do this change before performing radiometric correction or after.
- Expand on what you mean by best and worst values? → best/worst of what, how does this affect you?