The remaining Layers of this 5th step should look like in the picture below. Select and merge the remainging copied layer of the united screenshot and the two adjustment layers (e.g. Hide the backup folder and create a white solid layer for a white background. You might have to change some settings there if the color selection is not working for you in the subsequent steps. It is very useful to make a copy of the united screenshot with the two adjustment layers and place them in a folder with name "backup".Try to find your own settings, but this is a good start. These settings vary from screenshots of different online maps. In the files used in this tutorial the values are: On this you have to spend a little more time and try to find the right settings for your picture. Second step is to make a new adjustment layer of type "Hue/Saturation.". The "auto" setting in the "Levels." dialog window works very well, so choose that to save time. (4th symbol from left on the bottom of the "Layers" panel like in the picture below). A very important step is to optimize color contrasts in this image file, to get better results on the color selection later on.įirst create a new "Levels." adjustment layer.Click on the right mouse button and choose "Merge Layers". After "Photomerge." processed the screenshots and merged them to a united screenshot, select all the layers on the layer panel.In the following dialog window choose "Reposition" and browse for the prepared screenshot files. Open Photoshop and go to "File - Automate - Photomerge.".Obviously you have to take more screenshots to cover the same area. TIP: Use a high zoom on the map in order to obtain a high resolution picture when merging.
Mac OSX: Use "⌘ + Shift + 4"to make screenshot from a selected screen area. Windows 7: Use the "Snipping-Tool" to select a screen area of the satellite image and save the screenshot. The screenshots have to be cleaned from the scale bar and any other graphic that is not part of the satellite image. Also very important: the map zoom has to be the same for every taken screenshot. It is important for the following steps to use a satellite picture without labels. Using Google Maps, Bing Maps or similar websites, you can make screenshots of the displayed maps.
You can download the original files used in this tutorial as a zip archive here.Īuthor and copyright: Florian Frank I. The tutorial has been done in CS5 but works in CS6 the same. This tutorial is shows a complete workflow, from merging google map screenshots, getting measurements from the merged picture and using the collected data to make graphical pie charts in Adobe Illustrator. Script download: Zip Archive Description:
Tutorial: Measure pixel area This Tutorial explains how to use the measure pixel area script for Photoshop Description site: Measure pixel area