QMap - Brightness and Contrast

 Adjusting the brightness and contrast of an image is the basic function of image processing. Since we have adopted the method of separately processing the three channels of red, green and blue, the processing effect can be better.

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

1. Red, green and blue channel selection
    By default, both red, green and blue channels are selected. When a channel is not selected, its color data remains as it is.

2. Brightness and Contrast Selection
    By default, "Brightness" processing is selected. Switch to "Contrast" processing via the circular button.

3. Test and Process
    After selecting the channel and adjusting the slider of brightness or contrast, click the "Test" button to quickly check the effect, and click the "Process" button to complete the processing when you are satisfied.








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