Table of Contents
Image
This object represents an image.
Functions
Image
Constructor function.
Syntax
var myObject = new Image();
var myObject = new Image(otherImage);
var myObject = new Image(filename);
Arguments
- otherImage - (Image) other Image to copy
- filename - (string) a valid image filename
Exceptions
- (ParameterTypeError) incorrect parameter type
- (ParameterCountError) incorrect parameter count
Example
Create a empty Image.
var myObject = new Image();
Create a Image representing a copy of otherImage.
var myObject = new Image(otherImage);
takeScreenshot
Take a screenshot of the whole screen or only of window and store the result in a new Image.
Syntax
var myObject = Image.takeScreenshot();
var myObject = Image.takeScreenshot(window);
Arguments
- window - (Window) the window to screenshot
Exceptions
- (InvalidWindowError) invalid window
takeScreenshotUsingScreenIndex
Take a screenshot of one screen and store the result in a new Image. [Added in Actionaz 3.7.0.]
Syntax
var myObject = Image.takeScreenshotUsingScreenIndex(0);
Arguments
- screenIndex - (integer) the index of the screen to screenshot
Exceptions
- (InvalidScreenIndexError) invalid screen index
Methods
clone
Returns a copy of this Image.
Syntax
myObject.clone();
Returns
- (Image) a copy of this Image
Example
var copyOfMyObject = myObject.clone();
equals
Returns true if this Image and another are referencing the same image.
Syntax
myObject.equals(other);
Arguments
- other - (Image) another Image
Returns
- (bool) true if other is referencing the same image
Example
if(myFirstObject.equals(mySecondObject)) //Do something
toString
Returns a string representing this Image.
Syntax
myObject.toString();
Returns
- (string) a string representing this Image
Example
Console.print(myObject.toString());
Notes
This method is automatically called when trying to convert a Image to a string.
setData
Sets the data of this Image.
Syntax
myObject.setData(data);
Arguments
- data - (RawData) RawData of the image
Returns
- (Image) this Image
Exceptions
- (ImageDataError) invalid image data
Notes
Supported image formats are BMP, GIF, JPG, JPEG, PNG, PBM, PGM, PPM, TIFF, XBM and XPM.
data
Returns the data of this Image as RawData in the BMP format.
Syntax
myObject.data();
Returns
- (RawData) this Image as RawData
Exceptions
- (ImageDataError) unable to get the image data
loadFromFile
Loads the Image from a file.
Syntax
myObject.loadFromFile(filename);
Arguments
- filename - (string) filename to load
Returns
- (Image) this Image
Exceptions
- (LoadImageError) unable to load the image
Notes
Supported image formats are BMP, GIF, JPG, JPEG, PNG, PBM, PGM, PPM, TIFF, XBM and XPM.
saveToFile
Saves the Image to a file.
Syntax
myObject.saveToFile(filename);
Arguments
- filename - (string) filename to save to
Returns
- (Image) this Image
Exceptions
- (SaveImageError) unable to save the image
Notes
Supported image formats are BMP, JPG, JPEG, PNG, PPM, TIFF, XBM and XPM.
applyFilter
Applies a filter on this Image.
Syntax
myObject.applyFilter(filter);
myObject.applyFilter(filter, options);
Arguments
- filter - (Filter) the filter to use
- options - (object) filter options
- filterChannels - (string) the color channel(s) to perform the filtering on. A string consisting of zero or one entity of each of the characters r,g,b,a
- filterBorderPolicy - (string) used with the convolution filter. Values are "mirror", "extend" or "wrap"
- convolutionDivisor - (integer) the convolution divisor
- convolutionBias - (integer) the convolution bias
- radius - (number) the radius
- force - (number) the force (use it, Luke!)
- center - (object) the center
- x - (integer) the x coordinate
- y - (integer) the y coordinate
Returns
- (Image) this Image
Exceptions
- (ApplyFilterError) unable to apply the filter
pixel
Returns a pixel from this Image.
Syntax
myObject.pixel(x, y);
Arguments
- x - (integer) x coordinate of the pixel to return
- y - (integer) y coordinate of the pixel to return
Returns
- (Color) the pixel
setPixel
Sets a pixel from this Image.
Syntax
myObject.pixel(x, y, color);
myObject.pixel(x, y, colorString);
myObject.pixel(x, y, red, green, blue);
Arguments
- x - (integer) x coordinate of the pixel to set
- y - (integer) y coordinate of the pixel to set
- color - (Color) color of the pixel to set
- red - (integer) red value of the color to set
- green - (integer) green value of the color to set
- blue - (integer) blue value of the color to set
Returns
- (Image) this Image
mirror
Mirror this Image.
Syntax
myObject.mirror(mirrorOrientation);
Arguments
- mirrorOrientation - (MirrorOrientation) mirror orientation
Returns
- (Image) this Image
setSize
Resizes this Image.
Syntax
myObject.setSize(size);
myObject.setSize(width, height);
Arguments
- size - (Size) the new Image size
- width - (integer) the new width of this Image
- height - (integer) the new height of this Image
Returns
- (Image) this Image
size
Returns the size of this Image.
Syntax
myObject.size();
Returns
- (Size) the size of this Image
width
Returns the width of this Image.
Syntax
myObject.width();
Returns
- (integer) the width of this Image
height
Returns the height of this Image.
Syntax
myObject.height();
Returns
- (integer) the height of this Image
copy
Returns a copy of this Image or only a part of it.
Syntax
myObject.copy();
myObject.copy(rect);
Arguments
- rect - (Rect) the section of this Image to copy
Returns
- (Image) a new copy of this Image
findSubImage
Searches for another image contained in this one.
Added in Actionaz 3.0.1.
Syntax
myObject.findSubImage(otherImage);
myObject.findSubImage(otherImage, options);
Arguments
- otherImage - (Image) the Image to find
- options - (object) search options
- confidenceMinimum - (integer) the minimum confidence percentage, 100 means perfect match (default: 70)
- downPyramidCount - (integer) the number of pyramids to use. A pyramid is a subdivision of the image used to accelerate the search. Choose 1 here if the searched image is not very different from this image. (default: 2)
- method - (Method) the search method to use (default: CorrelationCoefficient) [Added in Actionaz 3.7.0.]
Returns
- (object) the matching point, or null if no matching point can be found
- position - (Point) the matching image center
- confidence - (integer) the confidence percentage
Exceptions
- (FindSubImageError) an error occured while searching for a sub-image
- (ParameterTypeError) incorrect parameter type
Example
//Searches for an object on the screen var screenShot = Image.takeScreenshot(); var imageToFind = new Image("object.png"); var searchResult = screenShot.findSubImage(imageToFind); if(searchResult) Console.print("Matching image found, position: " + searchResult.position + ", confidence: " + searchResult.confidence); else Console.print("No matching image found.");
findSubImages
Searches for images contained in this one.
Added in Actionaz 3.0.1.
Syntax
myObject.findSubImages(otherImage);
myObject.findSubImages(otherImage, options);
Arguments
- otherImage - (Image) the Image to find
- options - (object) search options
- confidenceMinimum - (integer) the minimum confidence percentage, 100 means perfect match (default: 70)
- downPyramidCount - (integer) the number of pyramids to use. A pyramid is a subdivision of the image used to accelerate the search. Choose 1 here if the searched image is not very different from this image. (default: 2)
- searchExpansion - (integer) the number of pixels to shift when searching for another matching image (default: 15)
- maximumMatches - (integer) the maximal number of matches (default: 10)
- method - (Method) the search method to use (default: CorrelationCoefficient) [Added in Actionaz 3.7.0.]
Returns
- (array of objects) the matching points, or null if no matching point can be found
- position - (Point) the matching image center
- confidence - (integer) the confidence percentage
Exceptions
- (FindSubImageError) an error occured while searching for a sub-image
- (ParameterTypeError) incorrect parameter type
Example
//Searches for objects on the screen var screenShot = Image.takeScreenshot(); var imageToFind = new Image("object.png"); var searchResult = screenShot.findSubImages(imageToFind); if(searchResult) { Console.print("Matching images found\n"); for(var i = 0; i < searchResult.length; ++i) { Console.print("position: " + searchResult[i].position + ", confidence: " + searchResult[i].confidence + "\n"); } } else Console.print("No matching images found.");
findSubImageAsync
Searches for another image contained in this one in asynchronous mode.
Added in Actionaz 3.0.1.
Syntax
myObject.findSubImageAsync(otherImage, callback);
myObject.findSubImageAsync(otherImage, callback, options);
Arguments
- otherImage - (Image) the Image to find
- callback(object) - (function) the function that will be called when the search ends
- position - (Point) the matching image center
- confidence - (integer) the confidence percentage
- options - (object) search options
- confidenceMinimum - (integer) the minimum confidence percentage, 100 means perfect match (default: 70)
- downPyramidCount - (integer) the number of pyramids to use. A pyramid is a subdivision of the image used to accelerate the search. Choose 1 here if the searched image is not very different from this image. (default: 2)
- searchExpansion - (integer) the number of pixels to shift when searching for another matching image (default: 15)
- method - (Method) the search method to use (default: CorrelationCoefficient) [Added in Actionaz 3.7.0.]
Returns
- (Image) this Image
Exceptions
- (FindSubImageError) an error occured while searching for a sub-image
- (ParameterTypeError) incorrect parameter type
Example
//Searches for an object on the screen var screenShot = Image.takeScreenshot(); var imageToFind = new Image("object.png"); screenShot.findSubImageAsync(imageToFind, function(searchResult) { if(searchResult) Console.print("Matching image found, position: " + searchResult.position + ", confidence: " + searchResult.confidence); else Console.print("No matching image found."); });
findSubImagesAsync
Searches for images contained in this one in asynchronous mode.
Added in Actionaz 3.0.1.
Syntax
myObject.findSubImagesAsync(otherImage, callback);
myObject.findSubImagesAsync(otherImage, callback, options);
Arguments
- otherImage - (Image) the Image to find
- callback(object) - (function) the function that will be called when the search ends
- position - (Point) the matching image center
- confidence - (integer) the confidence percentage
- options - (object) search options
- confidenceMinimum - (integer) the minimum confidence percentage, 100 means perfect match (default: 70)
- downPyramidCount - (integer) the number of pyramids to use. A pyramid is a subdivision of the image used to accelerate the search. Choose 1 here if the searched image is not very different from this image. (default: 2)
- searchExpansion - (integer) the number of pixels to shift when searching for another matching image (default: 15)
- maximumMatches - (integer) the maximal number of matches (default: 10)
- method - (Method) the search method to use (default: CorrelationCoefficient) [Added in Actionaz 3.7.0.]
Returns
- (Image) this Image
Exceptions
- (FindSubImageError) an error occured while searching for a sub-image
- (ParameterTypeError) incorrect parameter type
Example
//Searches for objects on the screen var screenShot = Image.takeScreenshot(); var imageToFind = new Image("object.png"); screenShot.findSubImagesAsync(imageToFind, function(searchResult) { if(searchResult) { Console.print("Matching images found\n"); for(var i = 0; i < searchResult.length; ++i) { Console.print("position: " + searchResult[i].position + ", confidence: " + searchResult[i].confidence + "\n"); } } else Console.print("No matching images found."); });
Enumerations
Filter
Image filters.
Values
- ConvolutionFilter: the convolution filter
- GaussianBlur: a gaussian blur
- Defocus: blurs the image
- Highlight: highlight the image
- Sharpen: sharpens the image
- SharpenMore: sharpens the image
- SharpenEvenMore: sharpens the image
- EdgeDetect: edge detection filter
- BigEdge: edge detection filter (thicker edges)
- Emboss: embosses the image (no color preservation)
- EmbossColor: embosses the image (color preservation)
- Negative: negates a color channel
- RemoveChannel: remove a color channel
- Punch: distorts the image
MirrorOrientation
Mirror orientation.
Values
- Vertical: a vertical mirror
- Horizontal: an horizontal mirror
Method
Search method. [Added in Actionaz 3.7.0.]
Values
- CorrelationCoefficient: correlation coefficient, best for most use cases
- CrossCorrelation: cross correlation
- SquaredDifference: squared difference