ENVI 5 sp 3 new features

ENVI 5 of Service Pack 3 has the following features:

1. sensor, data format, metadata

· ENVI reads and displays images from the following sensors:

· LANDSAT-8

· EO-1 Ali and Hyperion

· NPP viirs

· Dubaisat

Pleiades Level-1B

· RapidEye Level-1B geotiff file metadata; ENVI previously only supports nitf l1b data format.

· Radiation Correction tools for LANDSAT-8 and EO-1 data.

· When you open the NPP viirs file, first select the radiation rate, reflectivity, brightness temperature, and inversion rate of the calibration data (depending on the product type and available band ). Next, you can select the original image with geographic reference and the corrected bow tie visualization results.

· The Toolbox contains a new entry: ry correction> re-projection GLT and bow tie correction. This tool is currently only applicable to NPP viirs images. If the data contains latitude and longitude data, this tool can be used to perform geographic correction on metadata. If NPP images also contain quality bands, use this tool to remove this bow tie effect.

· Create a text file Metafile, which contains the image file name and/or as the name of the Virtual File band. When you input or process the selected Metafile, you can use File> open. ENVI can retrieve and read image data from a single disk file. If the data belongs to the same Metafile, then you can process it.

· Envi api envi: openraster is used to open a remote dataset.

· Metadata fields in the new standard ENVI header file:

O data increase value: the increase value of each band. Unit: W/(m2 * μm * sr ).

O Data offset value: the offset value of each band.

O Data reflectivity increase value: an array of data reflection increase values.

O Data reflectivity offset value: an array of low-cost data reflection values.

O product type: For worldview and Quickbird products, valid values include basic products, three-dimensional products, standard products, calibration products, and digital elevation model products. For NPP viirs products, the valid values include EDR and SDR.

O reader: You can customize the path for reading space and spectral data.

O reflectivity proportional factor: divides the reflectivity value from 0 to 1. For example, if the value 10000 represents a reflectivity of 1.0 in the image data, the input reflection proportional factor is 10000.

· ENVI can read the PNG format on the Macintosh and Linux operating systems. It also contains legends for displaying some Web Map Service (WMS) datasets. In the past, ENVI can only read PNG files in Windows operating systems.

· If the ALOS palsar geographic dataset (GR, especially 1.0, 1.5, and 4.1) includes a. Meta File, ENVI extracts the image collection time and pseudo map information.

· Connection points are used to calculate metadata tags for model conversion in geotiff images, so that the geographic reference images are displayed as pseudo (non-standard) Projection coordinates in ENVI.

· Use ENVI to open a geotiff file containing correct standard projection metadata, which can be automatically calibrated. If there is a unique rational polynomial coefficient (RPC) information, the data to be used for geographic reference. If a quasi-geotiff file only contains the metadata tag of modeltransform but does not have RPC or standard map information, then ENVI writes the pseudo map information file. As long as the file package contains RPC information, it can be used for data geographic correction. If the geotiff file only contains labels of the model conversion header file and does not contain RPC files or standard map information, ENVI needs to add its pseudo-projection information to the data file.

· When ENVI uses rotation and Standard map projection to read geotiff images, ENVI can save them to geotiff format while retaining the rotation settings.

· For TIFF and geotiff image files, you can use the edit ENVI header tool or a text editor to create an ENVI header file (. HDR) to overwrite the default metadata field of the system. For example, you can change the default data stretch mode to better display the data, or modify the wavelength information when the band information in the tiff/geotiff metadata file is clear. Once the modification information is saved, ENVI reads the new metadata value when the image file is re-opened.

· A given image has a priority when it has different types of MAP information. If the image contains standard map information and RPC or pseudo information, Standard map information is used as the main spatial reference, and RPC and MAP information are used as auxiliary spatial reference. If you save the file to the ENVI format, ENVI adds the RPC Information to the header file. If the image contains RPC and pseudo map information, RPC information will be used as the main spatial reference. If the image contains an RPC file and pseudo map information, the RPC information is used as the main spatial reference.

· If the file contains RPC or pseudo map information, the longitude and latitude of the current cursor are displayed in degrees, minutes, and seconds.

· ENVI currently does not support the display of images with a geographical search table (GLT) from geographical coordinates to Standard map projection.

· The envi api adds the ENVI raster spatial ref GLT object. This is a reference to the GLT space associated with the ENVI raster.

· If the user displays the images displayed by ESRI image servic opened through remote Connection Manager (set the basic coordinate system display), the image service request uses the same coordinate system by default. You can change the default image service coordinate system if necessary.

· When you access an embedded dataset (via ESRI image services) through remote connection manager, you can select different options and enter the display and sorting of the grid. These options can be used only when ArcGIS Desktop 10.1 is installed.

· New nitf parameter setting: If a nitf C8 image is cropped when it is set to true, ENVI will obtain the original pixel bit (abpp) from the nitf file ), instead of generating new nitf C8 statistics (abpp, nbpp, histoa: obpp, and SOC: siz: ssiz) from the cropped image ). The default value is false.

2. Image Processing

· The image to map correction tool can be completed through Toolbox.

· In the Visual Analysis workflow of Viewshed Analysis workflow, the visible area is green. Invisible or uncertain areas are marked in red.

3. User Interface

· The image to map correction tool can be completed through Toolbox.

· Parameter settings: allows you to customize the type and display the default position.

· By default, the thickness of the pointer, polygon, and line is three pixels, so that the line width is visible.

· When the user scales up or down to any scale, the filled polygon data can be precisely displayed.

· The visual quality of lines and polygon has been improved.

· No matter whether the underlying display data is positive or rotating, symbol notes, elliptical notes, and rectangular notes are initially displayed in the axial orthogonal mode. Text comments are initially drawn horizontally.

· Vector Properties dialog box: If a vector property has more than 256 values, the selected color table is equally assigned to the attribute value to create a color gradient. If you want to use a color table to repeat each iteration of the 256 attributes, you can selectCycle Color TableOption complete.

· In the newDisplay GeneralFor special data types in parameter settings, you can set their unique default stretch type:

O default 8-bit image stretch

O default 16-bit stretch for uninteger Images

O default stretch of all other images

· If you add the current view to the PPT, the geographical coordinates of the central map of the current view data will be added to the presentation slide.

· If you have not selected layer manager or toolbox from the main application, you can select the following methods:

O click the square icon in the floating dialog box.

O click the right arrow in the main application (used to hide the same arrow as the display panel)

O click the X button in the upper-right corner of the floating dialog box.

·Use File> openOrFile> open as files are stored in File> openIn recent, you can easily obtain the existing or files to be opened.

· Select from the menu barFile> close allClose all files. ENVI removes all files from Data Manage and layer manager.

· Windows users can drag and drop files from ArcMAP, arccatalog, or Windows File ManagerIn multiple views. You can also drag files from data management to any view.

· If there are multiple view Windows, you can drag the raster, vector, or annotation layer from layer manager to any display window or corresponding layer manager view icon. This creates a copy of the layer to display the view.

· Data Manager hasLoad grayscaleClick to quickly display a single band of image data..

When you clickHelp> aboutThen, the number of licenses/Installations for ENVI or ENVI ex is displayed. You can contact the technical support service through these licenses/installation quantities.