Use Levels adjustment on an image

Levels transformation allows users to adjust the tonal range of an image to improve its overall contrast and color balance. However, it is important to use it carefully and not overdo the adjustments, as this can result in an unrealistic or unnatural-looking image.

All of your image tones can be adjusted, and you can also make subtle color adjustments. Apply the linear formula a * input + b to the image to adjust image levels.

---

Params

A (a), B (b)

• A - Multiplier.
• B - Offset.

The minimum parameter for A and B is 0 and the maximum is 50. The value of parameter A is 1 by default. The value of parameter B is 0 by default.

Levels

URL

https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/t.linear(a:3,b:3)/images/transformation/baseball-game.jpg

React

<PixelBinImage url="https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/t.linear(a:3,b:3)/images/transformation/baseball-game.jpg" />

JavaScript

import Pixelbin from "@pixelbin/core";

const obj = {
    cloudName: "dummy-cloudname",
    zone: "FIDrmb",
    version: "v2",
    transformations: [{"name":"linear","plugin":"t","values":[{"key":"a","value":"3"},{"key":"b","value":"3"}]}],
    filePath: "images/transformation/baseball-game.jpg",
    baseUrl: "https://cdn.pixelbin.io",
};
const url = Pixelbin.default.utils.objToUrl(obj);
console.log(url);
// url
// https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/t.linear(a:3,b:3)/images/transformation/baseball-game.jpg

Node.js

const { url } = require("@pixelbin/admin");

const obj = {
    cloudName: "dummy-cloudname",
    zone: "FIDrmb",
    version: "v2",
    transformations: [{"name":"linear","plugin":"t","values":[{"key":"a","value":"3"},{"key":"b","value":"3"}]}],
    filePath: "images/transformation/baseball-game.jpg",
    baseUrl: "https://cdn.pixelbin.io",
};
const cdnUrl = url.objToUrl(obj);
console.log(cdnUrl);
// cdnUrl
// https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/t.linear(a:3,b:3)/images/transformation/baseball-game.jpg

Python

from pixelbin.utils.url import obj_to_url

obj = {
    "cloudName": "dummy-cloudname",
    "zone": "FIDrmb",
    "version": "v2",
    "transformations": [{"name":"linear","plugin":"t","values":[{"key":"a","value":"3"},{"key":"b","value":"3"}]}],
    "filePath": "images/transformation/baseball-game.jpg",
    "baseUrl": "https://cdn.pixelbin.io",
}
url = obj_to_url(obj)
print(url)
# url
# https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/t.linear(a:3,b:3)/images/transformation/baseball-game.jpg

Golang

package main

import (
 "fmt"
 "github.com/pixelbin-dev/pixelbin-go/v2/sdk/utils/url"
)

func main() {
    obj := map[string]interface{}{
        "cloudName": "dummy-cloudname",
        "zoneSlug": "FIDrmb",
        "version": "v2",
        "transformations": []map[string]interface{}{
		{"plugin": "t", "name": "linear", "values": []map[string]interface{}{ {"key": "a", "value": "3"},{"key": "b", "value": "3"},}},
        },
        "filePath": "images/transformation/baseball-game.jpg",
        "baseUrl": "https://cdn.pixelbin.io",
        "options": map[string]interface{}{},
    }
    urlstring, err := url.ObjToUrl(obj)
    if err != nil {
        fmt.Println(err)
    }
    fmt.Println(urlstring)
}
// urlstring
//  https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/t.linear(a:3,b:3)/images/transformation/baseball-game.jpg

Kotlin

import com.pixelbin.url.UrlObj
import com.pixelbin.Utils
import com.pixelbin.transformation.TransformationObj

fun main(){
    val obj = UrlObj(
        cloudName = "dummy-cloudname",
        zone = "FIDrmb",
        version = "v2",
        transformation = arrayListOf(
		TransformationObj( plugin = "t", name = "linear", values = hashMapOf( "a" to "3","b" to "3"), )
        ),
        filePath = "images/transformation/baseball-game.jpg",
        baseUrl = "https://cdn.pixelbin.io"
    )
    val url = Utils.objToUrl(obj)
    println(url)
    // url
    // https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/t.linear(a:3,b:3)/images/transformation/baseball-game.jpg
}

C#

 using System;
 using System.Collections.Generic;
 using System.IO;
 using Pixelbin.Utils;

 namespace ExampleNamespace
 {
     class ExampleClass
     {
         static void Main(string[] args)
         {
            UrlObj obj = new UrlObj(
                version: "v2",
                cloudName: "dummy-cloudname",
                filePath: "images/transformation/baseball-game.jpg",
                zone: "FIDrmb",
                baseUrl: "https://cdn.pixelbin.io",
                transformations: new List<UrlTransformation>() {
			new UrlTransformation(plugin: "t", name: "linear", values: new List<Dictionary<string, string>>() { new Dictionary<string, string>() { { "key", "a" }, { "value", "3" } }, new Dictionary<string, string>() { { "key", "b" }, { "value", "3" } }} )
                }
            );
            string url = Url.ObjToUrl(obj);
            Console.WriteLine(url);
            // returned url string
            // https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/t.linear(a:3,b:3)/images/transformation/baseball-game.jpg
         }
    }
}

PHP

<?php
require 'vendor/autoload.php';
use Pixelbin\Utils\Url;

$obj = [
    "cloudName" => "dummy-cloudname",
    "zone" => "FIDrmb",
    "version" => "v2",
    "options" => [],
    "transformations" => [
    	["plugin" => "t", "name" => "linear", "values" => [ [ "key" => "a", "value" => "3" ], [ "key" => "b", "value" => "3" ], ], ],
    ],
    "filePath" => "images/transformation/baseball-game.jpg",
    "baseUrl" => "https://cdn.pixelbin.io",
];
$url = Url::obj_to_url($obj);
print($url);
// url
// https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/t.linear(a:3,b:3)/images/transformation/baseball-game.jpg
?>

Original

URL

https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/original/images/transformation/baseball-game.jpg

React

<PixelBinImage url="https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/original/images/transformation/baseball-game.jpg" />

JavaScript

import Pixelbin from "@pixelbin/core";

const obj = {
    cloudName: "dummy-cloudname",
    zone: "FIDrmb",
    version: "v2",
    transformations: [],
    filePath: "images/transformation/baseball-game.jpg",
    baseUrl: "https://cdn.pixelbin.io",
};
const url = Pixelbin.default.utils.objToUrl(obj);
console.log(url);
// url
// https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/original/images/transformation/baseball-game.jpg

Node.js

const { url } = require("@pixelbin/admin");

const obj = {
    cloudName: "dummy-cloudname",
    zone: "FIDrmb",
    version: "v2",
    transformations: [],
    filePath: "images/transformation/baseball-game.jpg",
    baseUrl: "https://cdn.pixelbin.io",
};
const cdnUrl = url.objToUrl(obj);
console.log(cdnUrl);
// cdnUrl
// https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/original/images/transformation/baseball-game.jpg

Python

from pixelbin.utils.url import obj_to_url

obj = {
    "cloudName": "dummy-cloudname",
    "zone": "FIDrmb",
    "version": "v2",
    "transformations": [],
    "filePath": "images/transformation/baseball-game.jpg",
    "baseUrl": "https://cdn.pixelbin.io",
}
url = obj_to_url(obj)
print(url)
# url
# https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/original/images/transformation/baseball-game.jpg

Golang

package main

import (
 "fmt"
 "github.com/pixelbin-dev/pixelbin-go/v2/sdk/utils/url"
)

func main() {
    obj := map[string]interface{}{
        "cloudName": "dummy-cloudname",
        "zoneSlug": "FIDrmb",
        "version": "v2",
        "transformations": []map[string]interface{}{

        },
        "filePath": "images/transformation/baseball-game.jpg",
        "baseUrl": "https://cdn.pixelbin.io",
        "options": map[string]interface{}{},
    }
    urlstring, err := url.ObjToUrl(obj)
    if err != nil {
        fmt.Println(err)
    }
    fmt.Println(urlstring)
}
// urlstring
//  https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/original/images/transformation/baseball-game.jpg

Kotlin

import com.pixelbin.url.UrlObj
import com.pixelbin.Utils
import com.pixelbin.transformation.TransformationObj

fun main(){
    val obj = UrlObj(
        cloudName = "dummy-cloudname",
        zone = "FIDrmb",
        version = "v2",
        transformation = arrayListOf(

        ),
        filePath = "images/transformation/baseball-game.jpg",
        baseUrl = "https://cdn.pixelbin.io"
    )
    val url = Utils.objToUrl(obj)
    println(url)
    // url
    // https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/original/images/transformation/baseball-game.jpg
}

C#

 using System;
 using System.Collections.Generic;
 using System.IO;
 using Pixelbin.Utils;

 namespace ExampleNamespace
 {
     class ExampleClass
     {
         static void Main(string[] args)
         {
            UrlObj obj = new UrlObj(
                version: "v2",
                cloudName: "dummy-cloudname",
                filePath: "images/transformation/baseball-game.jpg",
                zone: "FIDrmb",
                baseUrl: "https://cdn.pixelbin.io",
                transformations: new List<UrlTransformation>() {

                }
            );
            string url = Url.ObjToUrl(obj);
            Console.WriteLine(url);
            // returned url string
            // https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/original/images/transformation/baseball-game.jpg
         }
    }
}

PHP

<?php
require 'vendor/autoload.php';
use Pixelbin\Utils\Url;

$obj = [
    "cloudName" => "dummy-cloudname",
    "zone" => "FIDrmb",
    "version" => "v2",
    "options" => [],
    "transformations" => [
    
    ],
    "filePath" => "images/transformation/baseball-game.jpg",
    "baseUrl" => "https://cdn.pixelbin.io",
];
$url = Url::obj_to_url($obj);
print($url);
// url
// https://cdn.pixelbin.io/v2/dummy-cloudname/FIDrmb/original/images/transformation/baseball-game.jpg
?>