Class: Google::Apis::VisionV1p1beta1::ColorInfo

Inherits:

Object

• Object
• Google::Apis::VisionV1p1beta1::ColorInfo

Includes:

Core::Hashable, Core::JsonObjectSupport

Defined in:

lib/google/apis/vision_v1p1beta1/classes.rb,
lib/google/apis/vision_v1p1beta1/representations.rb,
lib/google/apis/vision_v1p1beta1/representations.rb

Overview

Color information consists of RGB channels, score, and the fraction of the image that the color occupies in the image.

Instance Attribute Summary

• #color ⇒ Google::Apis::VisionV1p1beta1::Color

  Represents a color in the RGBA color space.

• #pixel_fraction ⇒ Float

  The fraction of pixels the color occupies in the image.

• #score ⇒ Float

  Image-specific score for this color.

Instance Method Summary

• #initialize(**args) ⇒ ColorInfo constructor

  A new instance of ColorInfo.

• #update!(**args) ⇒ Object

  Update properties of this object.

Constructor Details

#initialize(**args) ⇒ ColorInfo

Returns a new instance of ColorInfo.

# File 'lib/google/apis/vision_v1p1beta1/classes.rb', line 511

def initialize(**args)
   update!(**args)
end

Instance Attribute Details

#color ⇒ Google::Apis::VisionV1p1beta1::Color

Represents a color in the RGBA color space. This representation is designed for simplicity of conversion to and from color representations in various languages over compactness. For example, the fields of this representation can be trivially provided to the constructor of java.awt.Color in Java; it can also be trivially provided to UIColor's +colorWithRed:green:blue:alpha method in iOS; and, with just a little work, it can be easily formatted into a CSS rgba() string in JavaScript. This reference page doesn't have information about the absolute color space that should be used to interpret the RGB value—for example, sRGB, Adobe RGB, DCI-P3, and BT.2020. By default, applications should assume the sRGB color space. When color equality needs to be decided, implementations, unless documented otherwise, treat two colors as equal if all their red, green, blue, and alpha values each differ by at most 1e-5. Example (Java): import com.google.type.Color; // ... public static java. awt.Color fromProto(Color protocolor) float alpha = protocolor.hasAlpha() ? protocolor.getAlpha().getValue() : 1.0; return new java.awt.Color( protocolor. getRed(), protocolor.getGreen(), protocolor.getBlue(), alpha); public static Color toProto(java.awt.Color color) float red = (float) color.getRed(); float green = (float) color.getGreen(); float blue = (float) color.getBlue(); float denominator = 255.0; Color.Builder resultBuilder = Color .newBuilder() . setRed(red / denominator) .setGreen(green / denominator) .setBlue(blue / denominator); int alpha = color.getAlpha(); if (alpha != 255) result. setAlpha( FloatValue .newBuilder() .setValue(((float) alpha) / denominator) . build()); return resultBuilder.build(); // ... Example (iOS / Obj-C): // .. . static UIColor* fromProto(Color* protocolor) float red = [protocolor red]; float green = [protocolor green]; float blue = [protocolor blue]; FloatValue* alpha_wrapper = [protocolor alpha]; float alpha = 1.0; if (alpha_wrapper != nil) alpha = [alpha_wrapper value]; return [UIColor colorWithRed:red green: green blue:blue alpha:alpha]; static Color* toProto(UIColor* color) CGFloat red, green, blue, alpha; if (![color getRed:&red green:&green blue:& blue alpha:&alpha]) return nil; Color* result = [[Color alloc] init]; [ result setRed:red]; [result setGreen:green]; [result setBlue:blue]; if (alpha < = 0.9999) [result setAlpha:floatWrapperWithValue(alpha)]; [result autorelease]; return result; // ... Example (JavaScript): // ... var protoToCssColor = function(rgb_color) var redFrac = rgb_color.red || 0.0; var greenFrac = rgb_color.green || 0.0; var blueFrac = rgb_color.blue || 0.0; var red = Math.floor(redFrac * 255); var green = Math.floor(greenFrac * 255); var blue = Math.floor(blueFrac * 255); if (!('alpha' in rgb_color)) return rgbToCssColor(red, green, blue); var alphaFrac = rgb_color.alpha.value || 0. 0; var rgbParams = [red, green, blue].join(','); return ['rgba(', rgbParams, ', ', alphaFrac, ')'].join('');; var rgbToCssColor = function(red, green, blue) var rgbNumber = new Number((red << 16) | (green << 8) | blue); var hexString = rgbNumber.toString(16); var missingZeros = 6 - hexString.length; var resultBuilder = ['#']; for (var i = 0; i < missingZeros; i++) resultBuilder. push('0'); resultBuilder.push(hexString); return resultBuilder.join('');; / / ... Corresponds to the JSON property color

Returns:

• (Google::Apis::VisionV1p1beta1::Color)

# File 'lib/google/apis/vision_v1p1beta1/classes.rb', line 499

def color
  @color
end

#pixel_fraction ⇒ Float

The fraction of pixels the color occupies in the image. Value in range [0, 1]. Corresponds to the JSON property pixelFraction

Returns:

• (Float)

# File 'lib/google/apis/vision_v1p1beta1/classes.rb', line 504

def pixel_fraction
  @pixel_fraction
end

#score ⇒ Float

Image-specific score for this color. Value in range [0, 1]. Corresponds to the JSON property score

Returns:

• (Float)

# File 'lib/google/apis/vision_v1p1beta1/classes.rb', line 509

def score
  @score
end

Instance Method Details

#update!(**args) ⇒ Object

Update properties of this object

# File 'lib/google/apis/vision_v1p1beta1/classes.rb', line 516

def update!(**args)
  @color = args[:color] if args.key?(:color)
  @pixel_fraction = args[:pixel_fraction] if args.key?(:pixel_fraction)
  @score = args[:score] if args.key?(:score)
end