Grayscale JPEG via Ruby Cloud API
Grayscale JPEG using native Ruby Cloud APIs without needing any image editor or 3rd-party libraries.
Get StartedHow to Grayscale JPEG Using Ruby Cloud API
Aspose.Imaging.Cloud for Ruby API which is a feature-rich, powerful and easy to use image manipulation and conversion Cloud API for Ruby platform. You can download its latest version directly from rubygems.org or install it from gem command line.
Command Prompt
> gem install aspose_imaging_cloud
Steps to Grayscale JPEG via Ruby Cloud API
Developers can easily load & grayscale JPEG files in just a few lines of code.
- Load JPEG file as stream
- Create & set the instance of CreateGrayscaledImageRequest
- Call the CreateGrayscaledImage method
- Get grayscaled image from response stream
System Requirements
Aspose.Imaging Cloud for Ruby is supported on all major operating systems. Just make sure that you have the following prerequisites.
- Ruby version >= 2.5.1
Grayscale JPEG - Cloud
| require 'fileutils' | |
| require 'aspose-imaging-cloud' | |
| IMAGE_FILE_NAME= 'example_image.jpeg'; | |
| IMAGES_FOLDER = 'ExampleImages'; | |
| CLOUD_FOLDER = 'CloudImages'; | |
| OUTPUT_FOLDER = 'Output'; | |
| # Get ClientId and ClientSecret from https://dashboard.aspose.cloud/ | |
| # or use on-premise version (https://docs.aspose.cloud/imaging/getting-started/how-to-run-docker-container/) | |
| imaging_api = AsposeImagingCloud::ImagingApi.new(client_secret, client_id, 'https://api.aspose.cloud') | |
| # Grayscale an image from cloud storage | |
| def grayscale_image_from_storage | |
| input_image = File.join(IMAGES_FOLDER, IMAGE_FILE_NAME) | |
| upload_file_request = AsposeImagingCloud::UploadFileRequest.new(File.join(CLOUD_FOLDER, IMAGE_FILE_NAME), input_image) | |
| result = self.imaging_api.upload_file(upload_file_request) | |
| if result.errors.any? | |
| puts('Uploading errors count: ' + result.errors.size.to_s) | |
| folder = CLOUD_FOLDER # Input file is saved at the desired folder in the storage | |
| storage = nil # We are using default Cloud Storage | |
| request = AsposeImagingCloud::GrayscaleImageRequest.new( | |
| IMAGE_FILE_NAME, folder, storage) | |
| updated_image = imaging_api.grayscale_image(request) | |
| # Save the image file to output folder | |
| image_name = 'updated_' + IMAGE_FILE_NAME | |
| path = File.absolute_path(File.join(OUTPUT_FOLDER, image_name)) | |
| File.write(path, updated_image) | |
| end | |
| # Grayscale an image. Image data is passed in a request stream | |
| def create_grayscaled_image_from_request | |
| storage = nil # We are using default Cloud Storage | |
| out_path = nil # Path to updated file (if this is empty, response contains streamed image) | |
| input_stream = File.open(File.join(IMAGES_FOLDER, IMAGE_FILE_NAME), 'r') | |
| request = AsposeImagingCloud::CreateGrayscaledImageRequest.new( | |
| input_stream, out_path, storage) | |
| updated_image = imaging_api.create_grayscaled_image(request) | |
| # Save the image file to output folder | |
| image_name = 'updated_' + IMAGE_FILE_NAME | |
| path = File.absolute_path(File.join(OUTPUT_FOLDER, image_name)) | |
| File.write(path, updated_image) | |
| end |
About Aspose.Imaging Cloud API for Ruby
Aspose.Imaging Cloud API is an image processing solution to process images (photos) within your cloud or web applications. It offers: cross-platform Image processing, including but not limited to conversions between various image formats (including uniform multi-page or multi-frame image processing), transformations (resize, crop, flip&rotate, grayscale, adjust), advanced image manipulation features (filtering, deskewing), AI features (i.e. object detection and reverse image search). It’s a Cloud API and does not depend on any software for image operations. One can easily add high-performance image conversion features with Cloud APIs within projects. Flexible integrations options including SDKs for various languages (Python, Ruby, .NET, Java, NodeJS, PHP) and the use of the REST API allow to make the integration easy.
Grayscale JPEGs via Online App
Grayscale JPEG documents by visiting our Live Demos website. The live demo has the following benefits:
JPEG What is JPEG File Format
A JPEG is a type of image format that is saved using the method of lossy compression. The output image, as result of compression, is a trade-off between storage size and image quality. Users can adjust the compression level to achieve the desired quality level while at the same time reduce the storage size. Image quality is negligibly affected if 10:1 compression is applied to the image. The higher the compression value, the higher the degradation in image quality.
Read MoreOther Supported Conversions
Using Ruby Cloud API, one can easily grayscale different formats including: