1997 Advanced Very High Resolution Radiometer (AVHRR) Browse Survey APPENDIX A - Results of AVHRR Browse Survey This appendix contains the results of a March, 1997 survey of some CEOS agencies regarding the details of their production of AVHRR browse. CCRS USGS DLR URI Univ. of Dundee NSC SAA I. Will the person who is filling out this survey please tell us what your are relative to I. Specified and the browse systems for AVHRR, Landsat TM and I. System Engineer I. input to was by people with as indicated above I. Manage, produce and design browse systems I. Design and manage browse system. I. No particular for the quick looks I. Design and manage SAA browse systems NOAA/ NCDC/
browse systems (e.g. produce browse data, manage browse system, design browse systems, etc.)? SPOT data including the systems to generate the data, central server system and access and viewing systems. CCRS USGS DLR URI Univ. of Dundee NSC SAA II. Please list all of your browse products which are derived from and used to reference Level 1 AVHRR data. Product 1: Product 2: (etc., as needed) Now, please answer the questions II. Our browse products reference level 0 AVHRR data. Data is framed into square scenes, reduced to 500 x 500 and II. Online browse for in if user wants to order II. Total Pass AVHHR available since 1992 up to now, elder data up to 1982 in II. 5.5km East Coast SST II. images II. Near real time quick looks II. AVHRR browse [LAC and HRPT data are also available from SAA, but browse is used for all three data compress products. based based NOAA/
in Sections 1, 2 and 3 for each of the browse products listed in answer to question II above: CCRS USGS DLR URI Univ. of Dundee NSC SAA 1. Browse Data 1.1 Which level of dataset is intended to be covered by this browse product? a. Only for Level 1 data b. For Level 1 and higher datasets 1. 1.1 c. Other (Level 0 data) 1. 1.1 a. Only for Level 1 data 1. 1.1 a. Only for Level 1 data 1. 1.1 a. Only for Level 1 data b. For Level 1 and higher datasets 1. 1.1 a. Only for Level 1 data 1. 1.1 a. Only for Level 1 data 1. 1.1 a. Only for Level 1 data
c. Other ( ) 1.2 What is the primary use for this browse product (please list in order of a. Search and order b. Quality control c. Fast product delivery d. Order e. Near real-time f. Other 1.2 a. Search and order b. Quality control e. Near real-time 1.2 a. Search and order b. Quality control 1.2 a. Search and order c. Fast product delivery d. Order b. Quality control e. Near real-time 1.2 a. Search and order (Public) f. Research and data analysis (In house) 1.2 a. Search and order b. Quality control c. Fast product delivery d. Order e. Near real-time 1.2 a. Search and order c. Fast product delivery 1.2 a. Search and order d. Order e. Near real-time CCRS USGS DLR URI Univ. of Dundee NSC SAA 1.3 Band selection 1.3.1 What bands are used in browse a. Single band: (band #: ) b. Multiple bands (e.g. 1&2,4&5): (band #'s: ) c. 1.3 1.3.1 b. Multiple bands (band #'s: 1 , 2) 1.3 1.3.1 a. Single band: (band #: 2 ) 1.3 1.3.1 b. Multiple bands (daytime: 1/2/4, 5/4/3 (data from Dec. 1994 on) - daytime: 1.3 1.3.1 c. bands: (band #'s:4&5) 1.3 1.3.1 b. Bands 1 to 5 c. Bands 1 and 2 1.3 1.3.1 a. Single band: (band #: 2 or 4 ) 1.3 1.3.1 a. Single band: (band #: 1, 2 or 4 ) [Only a single band is used for the browse image, but can select which of nighttime users ? : Algorithm
combined bands: (band #'s: ) 2/4, 3/4 (data before Dec. 1994)). these three bands they want to see.] CCRS USGS DLR URI Univ. of Dundee NSC SAA 1.3.2 For what purpose did you select the band(s)? (Select all that apply) a. To distinguish clouds b. To recognize c. Other ( ) 1.3.2 a. To clouds c. Other (To and snow and ice) 1.3.2 1.3.2 a. To clouds b. To recognize c. Other ( improve optical of visuality of data inherent effects ) 1.3.2 a. To clouds b. To recognize 1.3.2 a. To clouds b. To recognize 1.3.2 c. Other upon daylight presence ) 1.3.2 a. To clouds [Both day and night.] b. To recognize c. Other (So that end-users can see the potential to produce : nighttime
imagery) 1.3.3 If 1.3.2 b. was selected, what are you a. Sea surface b. Vegetation c. Bare soil d. Humidity e. Other 1.3.3 b. 1.3.3 1.3.3 a. Sea surface b. factor and c. Bare soil d. Humidity e. Other (consider daytime / 1.3.3 a. Sea surface 1.3.3 a. Sea surface b. 1.3.3 1.3.3 e. Other (Only those that a user can see in the raw data.) CCRS USGS DLR URI Univ. of Dundee NSC SAA 1.4 Image size, resolution 1.4.1 Image size (if there are multiple sizes, please list)? ( * * ) (Pixel * Line * Bits) 1.4 1.4.1 (Pixel * Line * Bits) 1.4 1.4.1 every 4th line and 5th sample 8 bit 1.4 1.4.1 1.4 1.4.1 (Pixel * Line * Bits) 1.4 1.4.1 From (102 * 180 * 8) To (512 * 900 * 8) 1.4 1.4.1 ( 158 * 304 * 8 ) (Pixel * Line * Bits) 1.4 / 1.4.1 ( 205 * 191 * 8 ) (Pixel * Line * Bits) [Every other pixel, every other line of raw GAC data, taking the most eight bits out of 10 for
f. Other ( ) f. Other ( pkzip ) [Browse images are zipped for storage, but are unzipped before being to end-user] CCRS USGS DLR URI Univ. of Dundee NSC SAA 1.5.2 Where is applied? a. No of browse data b. Data is stored c. and during 1.5.2 b. Data is stored 1.5.2 b. Data is stored archive is available if change is needed) 1.5.2 b. Data is stored for of original products (or sections) applies c) being by 1.5.2 b. Data is stored d. during 1.5.2 b. Data is stored 1.5.2 b. Data is stored 1.5.2 b. Data is stored c. for WWW
1.5.3 Does the user have a choice of whether or not the browse is a. Yes b. No 1.5.3 b. No 1.5.3 b. No 1.5.3 b. No 1.5.3 b. No 1.5.3 b. No 1.5.3 b. No 1.5.3 b. No 1.5.4 Lossless or Lossy or both? a. Lossless b. Lossy c. Both 1.5.4 b. Lossy 1.5.4 b. Lossy 1.5.4 b. Lossy for all original products: c, by user none, GNU zip, UNIX 1.5.4 a. Lossless (for storage) b. Lossy (for GIF 1.5.4 c. Both 1.5.4 a. Lossless 1.5.4 a. Lossless [For storage.] b. Lossy [For image to WWW browser.] CCRS USGS DLR URI Univ. of Dundee NSC SAA 1.6 Data format 1.6.1 What is the original data format? a. HDF b. CEOS c. UNIX raster image d. NOAA Level 1b format e. NetCDF f. Other ( ) 1.6 1.6.1 b. CEOS 1.6 1.6.1 c. UNIX raster image d. NOAA Level 1b format 1.6 1.6.1 d. NOAA Level 1b format (HRPT) 1.6 1.6.1 d. NOAA Level 1b format f. Other( Level 2: AVHRR Miami DSP image format ) 1.6 1.6.1 f. Other (HRPT Level 0 ) 1.6 1.6.1 c. UNIX raster image 1.6 1.6.1 d. NOAA Level 1b format on on on
granule. The content of a browse product can be a of image (data values derived from a specific data granule), image annotation (e.g. lat/lon grid, coastlines, political etc.) and text (e.g. lat/lon corner points, start-stop time, file name, etc.). What is the content of the Browse products you use? a. Only browse image data b. included in browse product file c. Browse image data and b. included in browse product file metadata available in separate catalog) a. Only browse image data (There is in the header that is in a a. Only browse image data #1 Server b. included in browse product file c. Browse image data and in separate files (multiple #2 Server b. included in browse product file b. included in browse product file c. Browse image data and in separate files a. Only browse image data c. Browse image data and in separate files are not part of the browse image, but are included as separate delivered together with the browse image as a single window or page.] on on on on comment boundaries
in separate files CCRS USGS DLR URI Univ. of Dundee NSC SAA 1.6.5 What kind of annotated is included? (Mark all that apply) a. date and time b. Sensor c. Platform d. Latitude and Longitude e. Map projection f. 1.6.5 a. date and time b. Sensor c. Platform d. Latitude and 1.6.5 a. date and time b. Sensor d. Latitude and 1.6.5 a. date and time b. Sensor c. Platform d. Latitude and e. Map 1.6.5 #1 Server a. date and time b. Sensor c. Platform d. Latitude and e. Map f. 1.6.5 a. date and time c. Platform d. Latitude and 1.6.5 1.6.5 a. [Time must be extracted from Entity ID; explained in on-line help files.] b. [Channel number is specified by user.] in search.] d.[Corner points (plus represent
g. Region (e.g., North America, Sea of Japan) h. Resolution i. Color (pallet, etc.) j. k. Method used to derive browse image data from original data. l. Data quality m. Cloud cover n. Browse product ID o. Original data ID p. Processing level q. Data algorithms r. Line loss s. Browse product file size t. Other ( ) n. Browse product ID o. Original data ID h. j. p. level s. Browse product file size t. Other ( product ) h. i. Color (pallet, etc.) j. n. Browse product ID r. Line loss s. Browse product file size (fixed) #2 Server a. date and time d. Latitude and f. h. i. Color (pallet, etc.) j. n. Browse product ID r. Line loss s. Browse o. Original data ID r. Line loss t. Other (Orbit center WWW) are listed.] e. [A map is drawn, but the method is not listed.] f.[Only map, which shows land and major political g.[Can be seen the map.]h. described in on-line help files.] i. [All images are k. [Some is available in on-line help.] l. [Only raw level 1B data is used for browse.] m. [Only on represent
product file size (fixed) what the user can see in the browse image.] o. [Yes: Entity ID.] p. in help] q. Data r. [Line dropouts are shown as black stripes in the image.] CCRS USGS DLR URI Univ. of Dundee NSC SAA 1.6.6 How does the user obtain this browse product, or about this browse product? a. catalog system b. Stand alone browse system c. Other ( ) 1.6.6 a. catalog system b. Stand alone browse system 1.6.6 a. catalog system 1.6.6 a. catalog system c. Other ( ) 1.6.6 b. Stand alone browse system 1.6.6 a. catalog system b. Stand alone browse system c. Other (WWW too ) 1.6.6 c. Other (WWW) 1.6.6 a. catalog system [Full catalog system can be accessed through or WWW (with limited 1.6.7 List 1.6.7 1.6.7 1.6.7 1.6.7 1.6.7 1.6.7 1.6.7 algorithm line
the ways the user can obtain this browse product (mark all that apply): a. Online b. Media c. Other ( ) a. Online a. Online a. Online b. Media a. Online a. Online b. Media a. Online a. Online CCRS USGS DLR URI Univ. of Dundee NSC SAA 1.6.8 Please provide a URL to a system interface that will allow us to download a sample of this browse product. 1.6.8 (full system including other sensors) 1.6.8 (Do search then look at browse) 1.6.8 1.6.8 (URL to #2 server interface. Includes about #1 client and server) 1.6.8 1.6.8 1.6.8 (for the WWW interface telnet saars1 for the interface) webglis
CCRS USGS DLR URI Univ. of Dundee NSC SAA 1.7 Browse 1.7.1 What is the number of browse data products that are available for each dataset that has associated browse data products? 1.7 1.7.1 One browse product per framed "scene" 1.7 1.7.1 One 1.7 1.7.1 7774 1.7 1.7.1 25,000+ 1.7 1.7.1 All 1.7 1.7.1 One 1.7 1.7.1 There are 27,500 full-orbit GAC datasets available. For browse, each orbit is divided into 32 "bins", with three browse images (channels 1,2,4)
stored per bin. Images from these bins are into a single image and cropped North and South for to the user. CCRS USGS DLR URI Univ. of Dundee NSC SAA 1.7.2 Are all browse data products on-line? (If not give or used to qualify which browse is available on-line, e.g. revolving last 90 days worth of data). 1.7.2 All browse products for currently received data is on-line 1.7.2 Yes 1.7.2 all available on-line 1.7.2 Yes 1.7.2 25% of archive has browse 1.7.2 (3 day revolving achive) 1.7.2 All browse images are line. 1.7.3 How much 1.7.3 18 1.7.3 1.7.3 stored on 1.7.3 (approx. 1.7.3 (18,500 1.7.3 1.7.3 tic percentage line
on-line memory is used to support making browse products available on-line? (please indicate type of storage if other than a server) (MBytes a browse server) Gbytes disk storage a server. RAID array system attached to server; for all DFD browse products with (NOAA) in total: 6 GB 2,400 MBytes ) MBytes on a browse server), ie. 18.5 30,000 MBytes on a browse server, growing by 1,200 MBytes per month. CCRS USGS DLR URI Univ. of Dundee NSC SAA 2. Statistics of use 2.1 Do you have statistics on browse access and/or usage? a. Yes b. No 2. 2.1 a. Yes 2. 2.1 a. Yes 2. 2.1 a. Yes 2. 2.1 a. Yes 2. 2.1 a. Yes 2. 2.1 b. No 2. 2.1 b. No are available for user sessions and orders, but not for browse.] 2.2 What are the periods that you have browse user statistics 2.2 Monthly access stats from January 1995 to present. 2.2 ?? 94-96 2.2 depends on product type and specific interest; 2.2 2.2 May 1995 to present 2.2 2.2
for? (Start - End) is not yet handled in a way CCRS USGS DLR URI Univ. of Dundee NSC SAA 2.3 What of things do you have statistics available for? a. Number of user accesses b. Types (e.g. domains) of users c. Number of browse products transferred d. Number of bytes transferred e. Other ( 2.3 a. Number of user accesses d. Number of bytes 2.3 a. Number of user accesses c. Number of browse products 2.3 a. Number of user accesses b. Types (e.g. domains) of users c. Number of browse products d. Number of bytes 2.3 a. Number of user accesses b. Types (e.g. domains) of users c. Number of browse products d. Number of bytes 2.3 a. Number of user accesses b. Types (e.g. domains) of users c. Number of browse products d. Number of bytes 2.3 2.3 a. Number of user accesses [For entire system; not for browse.] b. Types (e.g. domains) of users [For entire system; not for browse.]
that your client(s) has/have been ported to? a. Unix b. OS2 c. Windows 95 (16 bit) d. Windows 95 (32 bit) e. f. Macintosh g. VMS (DEC) h. Other ( ) All image capable browsers a. Unix X-GILS a. Unix c. Windows 95 (16 bit) #1 a. Unix b. Sun OS 4.X e. g. VMS (DEC) #2 Any system that supports WWW browsers All N/A are available or in This includes most of the following a. Unix b. OS2 95 (16 bit) 95 (32 bit) e. DOS f. Mac g. VMS (DEC) CCRS USGS DLR URI Univ. of Dundee NSC SAA 3.2 Available functions 3.2.1 Browse image functions (indicate all that apply)? a. Zoom/pan b. Scroll c. Palette d. point display 3.2 3.2.1 Simple image display 3.2 3.2.1 a. b. Scroll c. Palette d. point display 3.2 3.2.1 a. 3.2 3.2.1 #1 a. b. Scroll c. Palette d. point display (also provides at point) e. Other ( Define region to 3.2 3.2.1 b. Scroll d. point display 3.2 3.2.1 No 3.2 3.2.1 a. only.] b. Scroll only.] c. Palette [Both and contrast m
e. Other ( ) be ) #2a. (can select 5.5km or 10km Palette e. Other (Can specify whether lat/lon grid and/or coastline is included) in choice of or in WWW.] d. point display [Corner points are shown in text listing.] CCRS USGS DLR URI Univ. of Dundee NSC SAA 3.2.2 Does the client allow the user to modify or enhance the of the browse product (e.g. annotation overlay, coastline overlay, rivers, political frontiers, etc.)? 3.2.2 No 3.2.2 In separate window Yes 3.2.2 - are fixed within AVHHR - available as separate menu - rivers / frontiers available in separate menu of map browser (with product 3.2.2 Yes 3.2.2 Optional overlay: coastline, lat/lon, rivers and political frontiers 3.2.2 No 3.2.2 Not
borders 3.2.3 What user support functions by the client?a. Inventory display b. Map projection c. Browse Other e. Data g. Other 3.2.3 a. Inventory display (Standard browse client is used.) 3.2.3 a. Inventory display d. Other browse data (Landsat and Imagery) e. Data 3.2.3 b. Map c. Browse d. Other browse data 3.2.3 #1 Server a. Inventory display b. Map f. g. Other (Cost, User log) #2 Server a. Inventory display f. 3.2.3 a. Inventory display c. Browse d. Other browse data e. Data 3.2.3 3.2.3 a. Inventory display b. Map CCRS USGS DLR URI Univ. of Dundee NSC SAA 3.2.4 Method of access to browse data? a. File name b. Link to inventory c. Direct transfer (e.g. controlled by client) d. Other ( ) 3.2.4 b. Link to inventory 3.2.4 b. Link to inventory c. Direct transfer (e.g. by client) 3.2.4 c. Direct transfer (e.g. by client) 3.2.4 a. File name (URL #2 Server) c. Direct transfer (#1 Server) 3.2.4 a. File name b. Link to inventory c. Direct transfer (e.g. by client) 3.2.4 c. Direct transfer (e.g. by client) 3.2.4 d. Other: Implicit in search. NOTE: Please answer the questions in Sections 4 and 5 only once, .
not for each data type. 4. 4.1 Who has access to your User(s) Manuals? a. Internal use only b. Available to the 4. 4.1 Limited user online. 4. 4.1 b. Available to the 4. 4.1 b. Available to the 4. 4.1 b. Available to the 4. 4.1 b. Available to the 4. 4.1 There are no manuals 4. 4.1 b. Available to the CCRS USGS DLR URI Univ. of Dundee NSC SAA 4.2 What is the delivery method for your User(s) Manuals? a. Help message b. WWW (URL) c. Delivery by ftp (IP addr ) d. Paper product e. f. Other ( ) g. None 4.2 4.2 a. Help message b. WWW (URL ) Guide 4.2 b. WWW (URL : ) c. Delivery by ftp (IP addr : ) d. Paper product e. 4.2 b. WWW (URL : 4.2 b. WWW (URL : d. Paper product 4.2 4.2 a. Help message b. WWW (URL : ) d. Paper product 4.3 What 4.3 4.3 4.3 some 4.3 4.3 4.3 4.3 Document
browse documents do you have? a. b. Browse c. d. Viewer e. Other ( ) f. None b. Browse d. Viewer e. Other (Internal white paper ) summary info is given in `ISIS Browse Concept', available on Web with a. b. Browse c. d. Viewer a. b. Browse c. d. Viewer CCRS USGS DLR URI Univ. of Dundee NSC SAA 5. Future Plans 5.1 Please list the other datasets (besides AVHRR) for which you provide browse products: 1. 2. . . 5. 5.1 5. 5.1 1. Landsat 2. Imagery 3. Digital -- Future 5. 5.1 1. SAR 2. XSAR 3. 4. Seasat SAR 5. / LISS, PAN 6. ERS-2 / GOME (level 3) 7. DFD feature products 8. Meteor / TOMS 5. 5.1 5. 5.1 1. SeaWiFS in future, Meteosat in future, possible others 5. 5.1 1. We plan to make browse products of ERS1/2 SAR Low images 5. 5.1 None m m
9. Nimbus / TOMS 10. Landsat TM, geocoded products CCRS USGS DLR URI Univ. of Dundee NSC SAA 5.2 Do you use the same (as AVHRR) browse system for all of these types of browse, or do you have more than one browse system? a. Same for all b. Different browse system for each dataset 5.2 a. Same for all 5.2 a. the same for Landsat we store three bands for Color browse product b. Different browse system for each 5.2 a. Same for all 5.2 5.2 a. Same for all 5.2 5.2
c. Other (please explain) dataset 5.3 Do you plan to support the CEOS CIP protocol on your system? a. Yes b. No 5.3 b. No 5.3 a. Yes 5.3 a. Yes 5.3 b. No 5.3 5.3 b. No 5.3 b. No CCRS USGS DLR URI Univ. of Dundee NSC SAA 5.4 Do you have plans to make significant or upgrades to your browse system in the next 18 mo.? (if so, please explain briefly) 5.4 There are present activities intended to make the entire browse process more and more easily 5.4 Move to replace Xclient with JAVA 5.4 No, except further upgrade of Web client functions 5.4 No 5.4 5.4 No 5.4 Yes, we plan to improve the WWW interface to include all of the now present in the We also plan to add a Radarsat browse
List of Effective Pages Page Number Issue Title Abstract Doc. Change Summary Contents p. 4-17 Appendix A Revision 1 Original Revision 1 Original Original Original Document History Document Number Status/Issue Publication Date CCR Number The EDC’s Past and Present Browse Strategies Original Revision 1 August 2001 October 2003 NA NA
Landsat TM HDT/DCT Subsampled 16th line/16th sample Bands 5, 4, 3 Contrast stretched Color composite GLIS browse header in JPEG comment 400 x 400 x 3 38 KB 536,126 files 19.67 GB 3480/3490 tape JPEG 75% Landsat 7 ETM D3 tape Three wavelet passes (8x reduction) Bands 5,4,3 contrast stretched color composite In JPEG comment 825 x 750 x 3 185 KB 624,965 files 63.93GB None JPEG 90% Corona Film Scanned at 50 or 100 dpi GLIS browse header in JPEG comment 1400 x 115 x 1 36 KB 862,584 files 29.01 GB 3490 tape JPEG 75% DOQ Unitree Quarter quads subsampled 2nd line/2nd sample, full quads subsampled 4th line/4th sample, both followed by two wavelet passes (3x3 filter) GLIS browse header in JPEG comment (not present in all files) 800 x 1000 158 KB 260,669 files 40.67GB None JPEG 75% SPOT HDT/DCT Proprietary software (ACS). In JPEG comment 512 x 500 45 KB 998,017 files 42.73 GB None JPEG 75%