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Image manipulation API.
App Engine provides the ability to manipulate image data using a dedicated Images service. The Images service can resize, rotate, flip, and crop images; it can composite multiple images into a single image; and it can convert image data between several formats. It can also enhance photographs using a predefined algorithm. The API can also provide information about an image, such as its format, width, height, and a histogram of color values.
Modules
images_blob_stub module: Stub version of the blob-related parts of the images API.
images_stub module: Stub version of the images API.
Classes
class AccessDeniedError: The application does not have permission to access the image.
class BadImageError: The image data is corrupt.
class BlobKeyRequiredError: A blob key is required for this operation.
class Error: Base error class for this module.
class Image: Image object to manipulate.
class InvalidBlobKeyError: The provided blob key was invalid.
class LargeImageError: The image data is too large to process.
class NotImageError: The image data given is not recognizable as an image.
class ObjectNotFoundError: The blob key referred to an object that does not exist.
class TransformationError: An error occurred while attempting to transform the image.
class UnsupportedSizeError: The size that was specified is not supported by requested operation.
Functions
composite(...): Composites one or more images onto a canvas.
composite_async(...): Asynchronously composites one or more images onto a canvas.
create_rpc(...): Creates an RPC object for use with the Images API.
crop(...): Crops the image.
crop_async(...): Asynchronously crops the given image.
delete_serving_url(...): Deletes a serving URL created for blob_key using get_serving_url.
delete_serving_url_async(...): Deletes a serving URL created using get_serving_url - async version.
get_serving_url(...): Obtains a URL that will serve the underlying image.
get_serving_url_async(...): Asynchronously obtains a URL that will serve the underlying image.
histogram(...): Calculates the histogram of the given image.
histogram_async(...): Calculates the histogram of the given image - async version.
horizontal_flip(...): Flips the image horizontally.
horizontal_flip_async(...): Asynchronously flips the image horizontally.
im_feeling_lucky(...): Automatically adjusts image levels.
im_feeling_lucky_async(...): Asynchronously automatically adjusts image levels.
resize(...): Resizes a given image file while maintaining the aspect ratio.
resize_async(...): Asynchronously resizes an image file, maintaining the aspect ratio.
rotate(...): Rotates an image a given number of degrees clockwise.
rotate_async(...): Asynchronously rotates an image a specified number of degrees clockwise.
vertical_flip(...): Flips the image vertically.
vertical_flip_async(...): Asynchronously flips the image vertically.