QMap - Geodetic Control Point (GCP) Map merge and split

 This unit provides merging and splitting methods, suitable not only for images without a coordinate system, but also for images with a geodetic coordinate system (GMap). In the mode with the geodetic coordinate system (GMap), the merge will be automatically arranged according to the coordinates, and the images without coordinates can be arranged according to the screen coordinates, which has strong compatibility. The size of the merged image is not limited. When splitting, there are two ways: by row and column and by width and height, and you can set the left and right upper and lower margins, and the divided images are automatically named according to the rules.

Now according to the software function interface, the introduction is as follows:

1. Load image
    Click the "Load Img" button to open the Select Image dialog box and select one or more images into the list box.

2. Merge display
    Click the "Merge display" button to display the merged preview image in the dialog box, and a new window will pop up to display the merged image. Since the display order is that the back covers the front, the small image should be placed in a position with a large sequence number. The display order of the images can be adjusted using the up and down arrow buttons. At the same time, in the list box, select the "SiteX" or "SiteY" of the image, double-click the left button of the mouse, edit and modify its value, and the position of the image on the merged image can be changed.
    When the "By GMap" option is selected, the merged display will automatically arrange the images according to the geodetic coordinates in the GMap format (created by this software). By default "By GMap" is not selected.

3. Save or Load list
    By editing and modifying the image information in the list box, a list of merged images is completed. Click the "Save list" button to save the data to a file, and when needed, you can "Load list" to continue working.

4. Split image
    There are two splitting methods for the merged image, that is, the image is divided according to the specified row and column, and the image is divided according to the specified width and height. After selecting, the divided area will be displayed on the preview image immediately. Click the divided area with the left mouse button, and the image of this area will be displayed in a new window immediately. The splitting details are very clear.
    After determining the splitting method, enter a feature value in the edit box of "Subimage name prefix". Click the "Split image" button, select the storage path of the splited images, and then automatically complete the splitting task.






Comments

Post a Comment

Popular posts from this blog

QMap - Resize

Image
 Image resizing is the overall scaling of an image to suit different applications. Now according to the software function interface, the introduction is as follows: 1.  Select image      Right-click on the image to select the image. At the same time, the original size (width and height) of the image is rendered in the edit box. 2. Bound ratio      By default, select " Bound ratio ", modify the width of the edit box, the corresponding height will be changed according to the aspect ratio of the original image, and vice versa. The image can also be changed out of proportion, resulting in distortion. 3.  Process     Click the " Process " button to process. To restore the original image, click the " Restore " button (Ctrl+Z) on the toolbar. Back to www.ccqmap.com
Read more

QMap - Geodetic Control Point (GCP) Geometric fine correction

Image
The purpose of geometric correction is to map an image without geodetic coordinates to a given coordinate system. Through mapping transformation, it can eliminate the deviation of image geometric position caused by various factors, such as extrusion, stretching, distortion and offset, etc. It is especially suitable for remote sensing images and stitching of various super large images. Through geometric correction, precise positioning images of various geographic information can be established, which makes the analysis of historical changes with time as the axis very convenient. Now according to the software function interface, the introduction is as follows: 1. Load control point file     Click the "Load" button to load the selected geodetic control points with features. The control points to be selected are listed in the list box at the top of the dialog. 2. Match Control Points      Click an item in the list box at the top, and the details are listed in the ed...
Read more

QMap - Change User

Image
After starting the software, if you want to change the user, you can start the " Change User " dialog box to change the user without reinstalling the software. Now according to the software function interface, the introduction is as follows: 1.  Start  Change User     Click the " Change User " button on the toolbar, or the " Change User " entry under " Help " in the main menu to open the dialog box. 2.  Enter Username and Password     Enter the username and password in the " Username " and " Password " edit boxes, respectively. This username and password are the same as the username and password to access our website. Enter the same version of the authorization code in the " Authorization code " edit box. Click the "OK" button to complete the change user operation. Back to www.ccqmap.com
Read more