Questions tagged [image]

A representation or description of a scene, typically produced by an optical or electronic device, such as a camera or a scanning radiometer.

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Conversion of numpy array to GEE image

My program needs a numpy array for processing, so I convert GEE image into numpy array using this code: # Define an image. img1 = ee.Image( 'LANDSAT/LC08/C01/T1_SR/LC08_038029_20180810') \ .select([...
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22 views

Generate images from map [closed]

I'm quite new to QGIS and I want to generate set of images from the map and layer which I have. So I have XYZ tiles map (NYC.gov tiles orthophotography) and Polygon layer. I want to transfer ...
1 vote
1 answer
24 views

Google Earth Engine finds Sentinel-3 images with no intersect with defined ROI

When I search for Sentinel-3 images that have been captured over a small lake, GEE returns images with no intersect with defined ROI. This behavior is just observed when searching for images captured ...
1 vote
1 answer
221 views

Definitely delete more than 1000 images from an image collection in Google Earth Engine using the code editor!

I need to definitely delete more than 1000 images from an image collection in Google Earth Engine using the code editor. After some attempts I arrived to the following code: var deleteA = function(...
1 vote
0 answers
203 views

Showing image (photo) stored as PostGIS base64 in ArcGIS Desktop

I have a PostGIS table which stores point data with images as attribute (in base64 data type). I would like to show the pictures from the column "bild" of the attribute table which look like ...
0 votes
1 answer
50 views

Converting each image in image collection to separate bands with band names in Google Earth Engine

How do I create a stacked image from an image collection of Sentinel 1 images over a period? I am selecting only the ascending mode, and the VH polarization. If I use ".toBands()" at the end ...
2 votes
2 answers
71 views

Image size limitation in QGIS print layout using HTML code

I'm trying to make an atlas with QGIS, with one image per page. My goal is more complex so I have to use HTML widget in order to display the images. The below code works, but only if the picture is ...
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0 answers
14 views

QField problem with QGIS WebDA archiviation

I'm having trouble viewing photos uploaded to a public server and viewable via URL. if I upload the URL in the attached field I can view the image on QGIS (3.22). Once the project has been imported ...
0 votes
1 answer
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GeoServer returns blank image (completely transparent)

I have a recent issue occur where for certain styles GeoServer is returning blank, completely transparent images. See here for an example. GeoServer version is 2.17.2 This is occurring with GetMap ...
1 vote
1 answer
135 views

Mapped function's arguments cannot be used in client-side operations

I am trying the below code to perform spectral dilation in GEE but gives me an error: spectral dilation: Layer error: A mapped function's arguments cannot be used in client-side operations The code ...
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0 answers
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Use of ratio in ImageWMS in OpenLayers

I am trying to understand the setting of ratio in ol.source.ImageWMS but I am not succeeding. I already understand the ratio: 1, as there is not much to understand there. ratio: 1 = browser viewbox. I ...
0 votes
1 answer
33 views

Exporting MODIS AOD monthly(mean) composite for 5 years

I am writing a code in Google Earth Engine, in which I want to export the image composite of mean monthly MODIS AOD for 5 years. I am writing the following code, but whenever I try to run it the ...
1 vote
4 answers
113 views

How do I adjust a layout's zoom level before exportToPNG?

I'm using ArcGIS Pro, and ArcPy. I have a file geodatabase with 1,000 unique polygons. What I would like to do is export each feature as a PNG image. I'm expecting to have 1,000 image files when it's ...
2 votes
1 answer
219 views

Radiance and Raw Image difference after Radiometric calibration

I have done Radiometric calibration on Envi 5.3 and got the output of my input Landsat 5 image. What is the difference between the raw image and the radiance image and why is this value of radiance ...
0 votes
1 answer
73 views

Export properties of a featureCollection along with features of it in Google Earth Engine

I want to read an imageCollection, reduce all images in the collection by the region. and save the result. However, when I save the result, the properties of the feature Collection is gone. It does ...
0 votes
0 answers
51 views

Applying Linear Stretch Landsat 8 SR Using Google Earth Engine

I'm doing research indices of impervious surface, but for calculate the indices, the Surface Reflectance value of Landsat 8 should be converted to a value in the range 0 - 65535 in order to maintain ...
1 vote
1 answer
56 views

Combining GEE layers to create a global categorical raster with class values?

I've been making a climate map of the world and each climate zone is stored in a different variable (i.e. warmtemperatedry, cooltemperatemoist, cooltemperatedry as you can see in the picture). I'd ...
2 votes
3 answers
2k views

View image file from hyperlink in Arcmap identify tool result

I have a file path to an image file in an attribute table, eg; C:\GIS\ScannedMaps\Map1.png When I use the identify tool on the feature I can see the file path with the hyperlink lightening symbol ...
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16 views

How to set image size, resolution and extent for pixel based images comparison

I have to do a comparison between a DEM file and a high resolution image (aerial image) to detect some area in a high resolution image. For this comparison I have to change pixel size, extent and row ...
1 vote
1 answer
311 views

Google Earth Engine-function (image) condition

Is there a way to set a condition inside function(image) in GEE? In my case, I am trying to return images with NDVI<0.2 only and use them in qualityMosaic function to generate a composite (with ...
1 vote
1 answer
83 views

Downloading all images in an ImageCollection to my local computer from Google Earth Engine

Based on Filter Sentinel-3 data based on cloud cover over a region of interest, I managed to get an ImageColection containing the name of hundreds of Sentinel-3 images with specific cloud cover over a ...
2 votes
1 answer
126 views

Use high precision to convert image from one EPSG defined CRS to another

This question is based on another question: I'm converting multiple images (.jpg or .png) from one EPSG defined CRS system to another, e.g. from EPSG:31255 to EPSG:25833 (on a server within a Java app)...
0 votes
1 answer
105 views

Converting 4 Band RGBA to 2 Band LA (Gray + Alpha) mode while keeping georeferenced data in GeoTiff

I created some GOES-16 images where the dark/night side of the visible image is transparent (alpha channel). I used satpy's DayNight Compositor to make the night side of the image transparent, while ...
0 votes
1 answer
133 views

QGIS Export to KML with image file

I have a layer in QGIS, points, 3 columns of data and a 4th is an image. When I export to .kml (client request) it loads fine in Google Earth and shows all the points, but when I click on a point I ...
0 votes
1 answer
104 views

Can legends be exported as image in CARTO BUILDER?

How to add a legend when exporting a BUILDER map as jpg/png image?
4 votes
1 answer
128 views

Get rid of no-data part of raster in Python

I have a raster that, for the most part, contains no-data values. Only on the right side there is data: I would like to get rid of the left part and have a new raster. The extent of the new raster ...
6 votes
1 answer
2k views

Convert land-based camera image pixel x,y to ground lat/long or x,y,z

I have a number of cameras at various known locations (x,y,z) and directions that are above ground about 20 feet pointed at different ground locations about 100 feet away from each camera, and whose ...
0 votes
1 answer
71 views

PyQGIS image exporter adding scale

In QGIS I'd like to add scale to my PyQGIS image exporter. Similar to the Project -> Import/Export -> Export map to image where you can add the scale to the image as in the picture below. ...
3 votes
1 answer
19 views

<geotools/HeatmapProcess> convert GridCoverage2d to BufferedImage

I got the heatmapprocessTest code from geotools github However, I can't confirm that the heat map is coming out well. Ultimately I want to create and save the heatmap as a BufferedImage. (png) For ...
0 votes
1 answer
85 views

Extracting metadata from Google Earth

How do I extract metadata from Google Earth? I downloaded the satellite image from Google Earth Pro. The data I want to know is that the date, resolution, and the server from which the image was taken ...
1 vote
2 answers
1k views

Export multiple Images from collection to Google Drive not working with Google Earth Engine Python API 0.1.238

I am struggling with Google Earth Engine Python API version 0.1.238 to export images from the Landsat EVI collection (from 2002 to 2020, but i started with a small sample) to my Google Drive, which ...
0 votes
0 answers
18 views

Seeking workaround for adding image from ArcGIS Online organizational content to Dashboard layout without sharing it publicly

Is there a workaround for adding an image from ArcGIS Online organizational content to a Dashboard as an embedded element without sharing it publicly? The url for an image within organizational ...
4 votes
3 answers
4k views

Create kmz with coordinates from images and thumbnails for symbols

I have about 110 geotagged images and am looking for an effective way to create a .kmz which contains for each image a point based on its geotag and uses a thumbnail of the picture as symbol. Clicking ...
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0 answers
28 views

Using Landsat MSS Collection 1

When I use Landsat MSS Collection 1 dataset in my roi, I can't get any images from Tier1, but Tier2 I can. This is code from someone to count the number of image, each year. When I switch to Tier2 ...
1 vote
1 answer
20 views

Use ostu to count water, but export image is all black

When I run my code, it can be print image in map. But when I export to the Drive, it becomes all black image. Like this: There is my code, it will be a few long. Most part of them is OSTU code which ...
0 votes
0 answers
47 views

Getting Rid of Black Boundaries from Tiff Image using Google Earth Engine

I'm getting a tiff image from earth engine using the code below, but the image I get is rectangular and surrounded by a black box. How can I get rid of the black boundaries on the corners and get a ...
1 vote
1 answer
89 views

Make IPictureMarkerSymbol file path accessible to all users?

I've written a little java add-in button for ArcDesktop 10.4, in eclipse, which makes a new ArcMap layer with some points. (NOT Runtime) My goal is to assign a picture as the symbol for each of these ...
1 vote
1 answer
437 views

Adding picture linked to feature in QGIS report layout

I'm trying to make a report in QGIS, in the attribute table of my layer, I have a column named "picture1" filled with the relative path of a picture, that illustrate the feature. In the ...
0 votes
1 answer
30 views

Generating feature collection from image band statistics

I'm trying to calculate the percent forest cover for 125 basins using the MapBiomas 30m land cover product for Brazil. The data is provided as an image with band values for each year. When I try to ...
1 vote
1 answer
129 views

How do you check the attribute information of the tif image in QGIS?

Where can I check the brightness value (DN) of the image stored as 'tif format' in QGIS? What is the way to add it to the attribute table? Current progress: Coordinates are assigned to each pixel of ...
1 vote
0 answers
62 views

Is the position coordinate of a pixel the center coordinate of that pixel?

Is the position coordinate of a pixel the center coordinate of that pixel? For example, in an image composed of 4 pixels as shown in the figure below, the coordinate values of 150 and 150 are put in ...
1 vote
1 answer
35 views

Brush up satellite image coloring

I have received the following satellite image. Unfortunately, the color grading is really poor and makes working with this image very tedious (see screenshot below). I am rather new to QGIS. How can ...
0 votes
1 answer
403 views

Get image pixel centroids in Google Earth Engine

I would like to create a feature collection consisting of the centroid points of the pixels in an image. The question of how to do this has been asked before on Stack Exchange, but not actually ...
0 votes
0 answers
10 views

I want to make sure that the two images match in the ENVI program

Is there a function that can compare pixels and brightness values of two satellite images in the ENVI program? I want to make sure that the two images match numerically or histogram. There are two ...
2 votes
1 answer
98 views

Export atlas PDF failed to print images item on template

I create a template on QGIS which contains some text and images. I render the image using HTML with code: <style> .cropped { position: absolute; width: 27mm; /* width of container */ ...
2 votes
1 answer
82 views

GetMap Request WMS

I formulate a GetFeatureInfo request that returns the feature information of the centre point of the map. The GetFeatureInfo request for WMS is: http://geoservices-inspire.irisnet.be/geoserver/...
1 vote
0 answers
109 views

Count the polygons of the raster given by the kmeans algorithm

I am struggling with a Python problem. My plan is to compute the clustering of the kmeans algorithm for an image and to create polygons from this classification. My goal is to get the total number of ...
0 votes
0 answers
15 views

Get image width and height in Google Earth Engine

We can get image dimensions with get("dimensions") ).get(0). The image is from ImageCollection,for example: However, There is no dimensions here. The image is computing results, there is ...
1 vote
0 answers
139 views

Plotting images from Google Earth Engine?

I am trying to plot GEE images as standalone figures (e.g., JPEG or PNG) for publications, however, I have not been able to find a standard method for doing that. For example, I have a landcover image ...
5 votes
1 answer
146 views

Noisy lines in all scenes for Landsat 7?

I'm seeing patterned lines in all Landsat 7 images that clearly are image artifacts. There are lines that jet in from the edges (the center looks better) Does anyone know what it is and if there are ...

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