def __init__(self, img, config):
width, height = img.size
self.crop = tuple(config.get("crop", [0, 0, width, height]))
cropWidth, cropHeight = codec_utils.cropDimensions(self.crop)
cropRatio = float(cropHeight) / cropWidth
self.imgWidth = config.get("imgwidth", cropWidth)
self.imgHeight = int(self.imgWidth * cropRatio)
def __init__(self, img, config):
width, height = img.size
self.crop = tuple(config.get('crop', [0, 0, width, height]))
cropWidth, cropHeight = codec_utils.cropDimensions(self.crop)
cropRatio = float(cropHeight) / cropWidth
self.imgWidth = config.get('imgwidth', cropWidth)
self.imgHeight = int(self.imgWidth * cropRatio)
def projectPrevLayerParametersToCurrent(self, prevLayerConfig, currLayerConfig):
# find current layer crop width divided by prev layer's crop width,
# to get the dimensions to which we need to inflate the previous layer
currWidth = cropDimensions(currLayerConfig.crop)[0]
prevWidth, prevHeight = cropDimensions(prevLayerConfig.crop)
numerator = prevWidth * currLayerConfig.imgWidth
denominator = currWidth * prevLayerConfig.imgWidth
divisor = gcd(numerator, denominator)
ratio = (numerator / divisor, denominator / divisor)
currResizeRatio = (float(currWidth)/currLayerConfig.imgWidth)
# Find the lower layer's position on the upper layer, to inverse the crop
currCropX0, currCropY0, currCropX1, currCropY1 = currLayerConfig.crop
prevCropX0, prevCropY0, prevCropX1, prevCropY1 = prevLayerConfig.crop
position = (int(float(prevCropX0 - currCropX0)/currResizeRatio),
int(float(prevCropY0 - currCropY0)/currResizeRatio))
canvasDimensions = (currLayerConfig.imgWidth, currLayerConfig.imgHeight)
return canvasDimensions, position, ratio
def projectPrevLayerParametersToCurrent(self, prevLayerConfig,
currLayerConfig):
# find current layer crop width divided by prev layer's crop width,
# to get the dimensions to which we need to inflate the previous layer
currWidth = cropDimensions(currLayerConfig.crop)[0]
prevWidth, prevHeight = cropDimensions(prevLayerConfig.crop)
numerator = prevWidth * currLayerConfig.imgWidth
denominator = currWidth * prevLayerConfig.imgWidth
divisor = gcd(numerator, denominator)
ratio = (numerator / divisor, denominator / divisor)
currResizeRatio = (float(currWidth) / currLayerConfig.imgWidth)
# Find the lower layer's position on the upper layer, to inverse the crop
currCropX0, currCropY0, currCropX1, currCropY1 = currLayerConfig.crop
prevCropX0, prevCropY0, prevCropX1, prevCropY1 = prevLayerConfig.crop
position = (int(float(prevCropX0 - currCropX0) / currResizeRatio),
int(float(prevCropY0 - currCropY0) / currResizeRatio))
canvasDimensions = (currLayerConfig.imgWidth,
currLayerConfig.imgHeight)
return canvasDimensions, position, ratio
def imgProportion(self, crop):
width, height = cropDimensions(crop)
return float(height) / width
def imgProportion(self, crop):
width, height = cropDimensions(crop)
return float(height) / width