brightness

问题 Does anyone have an idea how to implement an Brightness Screen Filter like the one here: http://www.appbrain.com/app/screen-filter/com.haxor I need a starting point and I can't figure out how to do it. 回答1: Just make a transparent full screen activity that lets touches pass through. To make touches pass through use the following Window flags before setting the contentView: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Window window = getWindow

问题 I m making App in netbeans platform using java swing Technology.I want to do image processing oncaptured image.This image is capture by X-Ray Gun.after that i want to increase/decrease brightness of image using JSlider.I done this using paintComponent(Graphics g) method. but i want to do direct effect of increased/decreased brightnees of image without using paintComponenet(Graphics g) method.so how can i do that? My code is shown below. In my code i use PlanarImage and BufferedImage class of

问题 I was searching how to change the brightness of the screen programmatically and I found this it is very good solution and it works nice, but it works only while my app is active. After my application is shutdown then the brightness is returned back the the same value as before I start my app. I want to be able to change the brightness just like when I press on the brightness button from my power widget. In the power widget that comes from android there are 3 states. One very bright one very

问题 I'd like to let the user control the brightness in an iOS app using a gesture recogniser to swipe up and down. Can gestures even control brightness? I've done it before using a slider and the brightness property of UIScreen... [UIScreen mainScreen].brightness = 0.5; I want to be able to control the brightness as you would with a slider (like the iBooks app) but instead of a slider use a gesture recogniser. The idea is that the gesture continuously changes the brightness value as long as a

问题 I seem to be having an issue where I create a BufferedImage which has transparent pixels like this: BufferedImage buff = new BufferedImage(i.getWidth(null), i.getHeight(null), BufferedImage.TYPE_INT_ARGB); and it works fine until I filter it through the RescaleOp to darken it. When I do this, the image disappears. Here is my complete code just so you can see how I am setting this up: BufferedImage buff = new BufferedImage(i.getWidth(null), i.getHeight(null), BufferedImage.TYPE_INT_ARGB);

问题 I'm using Microsoft Visual Studio 2010, including reference Dynamic Data Display. I'm want to make an scroll bar that control of the brightness of the map . I'm tried to find a property like brightness or something like it but without a success. Thank for help friends. :) 回答1: You can control the brightness of the plotter by setting its Background to different RGB values. Each value has a range from 0 (Darkest) to 255 (Brightest). First set a brightest color, for example Byte R = 255; Byte G

问题 i have: BufferedImage image; //few lines of code public void stateChanged(ChangeEvent e) { for (int i = 0; i < image.getWidth(); i++) { for (int j = 0; j < image.getHeight(); j++) { Color color = new Color(image.getRGB(i, j)); int r, g, b; val = sliderBrightness.getValue(); r = color.getRed() + val; g = color.getGreen() + val; b = color.getBlue() + val; } } I haven't got any idea how to solve this problem, what should i modify that Image will react on JSlider brightness? 回答1: public void

问题 I need to display this array of double in picture box in C# double[,] Y1 = new double[width, height];//not empty array contain brightness from RGB R = new byte [width, height]; G = new byte [width, height]; B = new byte [width, height]; Bitmap bmp4 = new Bitmap(width, height); for (int x = 0; x < width; x++) { for (int y = 0; y < height; y++) { Y1[x, y] = (0.39 * R[x,y]) + (0.59 * G[x,y]) + (0.12 * B[x,y]); Int32 zz = Convert.ToInt32(Y1[x, y]); bmp4.SetPixel(x, y, zz); } } pictureBox6.Image

问题 I want to change brightness in color I implemented this... Settings.System.putInt(context.getContentResolver(),android.provider.Settings.System.SCREEN_BRIGHTNESS, 200); this will change my device's brightness in black&white mode. like above images, I can change brightness but how can I give color? Is there any other parameter which I don't know? 回答1: This can be accomplished using windows of type TYPE_SYSTEM_ALERT. The idea is that even services can have a Window; so you can use a service,

问题 I saw this post Brightness Screen Filter which describes how to create a simple screen filter. That code used private void setBrightness(int brightness) { try { IHardwareService hardware = IHardwareService.Stub.asInterface( ServiceManager.getService("hardware")); if (hardware != null) { hardware.setScreenBacklight(brightness); } } catch (RemoteException doe) { } } But i could not find the IHardwareService.jar Can anyone explain me the code that i should use to create this simple app?