Ridimensionare un'immagine

Resize an image to a new aspect ratio (server-side outpaint)

curl --request POST \
  --url https://api.samsa.ai/public/v1/images/resizes \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "image": {
    "image_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "url": "https://cdn.example.com/photo.png",
    "base64": "<string>",
    "mime_type": "image/png"
  },
  "aspect_ratio": "<string>",
  "resolution": "1K",
  "num_outputs": 1,
  "prompt": "",
  "placement": {
    "gravity": "center",
    "scale": 1
  },
  "webhook_url": "https://example.com/webhooks/samsa"
}
'

import requests

url = "https://api.samsa.ai/public/v1/images/resizes"

payload = {
    "image": {
        "image_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "url": "https://cdn.example.com/photo.png",
        "base64": "<string>",
        "mime_type": "image/png"
    },
    "aspect_ratio": "<string>",
    "resolution": "1K",
    "num_outputs": 1,
    "prompt": "",
    "placement": {
        "gravity": "center",
        "scale": 1
    },
    "webhook_url": "https://example.com/webhooks/samsa"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    image: {
      image_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
      url: 'https://cdn.example.com/photo.png',
      base64: '<string>',
      mime_type: 'image/png'
    },
    aspect_ratio: '<string>',
    resolution: '1K',
    num_outputs: 1,
    prompt: '',
    placement: {gravity: 'center', scale: 1},
    webhook_url: 'https://example.com/webhooks/samsa'
  })
};

fetch('https://api.samsa.ai/public/v1/images/resizes', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.samsa.ai/public/v1/images/resizes",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'image' => [
        'image_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
        'url' => 'https://cdn.example.com/photo.png',
        'base64' => '<string>',
        'mime_type' => 'image/png'
    ],
    'aspect_ratio' => '<string>',
    'resolution' => '1K',
    'num_outputs' => 1,
    'prompt' => '',
    'placement' => [
        'gravity' => 'center',
        'scale' => 1
    ],
    'webhook_url' => 'https://example.com/webhooks/samsa'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.samsa.ai/public/v1/images/resizes"

	payload := strings.NewReader("{\n  \"image\": {\n    \"image_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"url\": \"https://cdn.example.com/photo.png\",\n    \"base64\": \"<string>\",\n    \"mime_type\": \"image/png\"\n  },\n  \"aspect_ratio\": \"<string>\",\n  \"resolution\": \"1K\",\n  \"num_outputs\": 1,\n  \"prompt\": \"\",\n  \"placement\": {\n    \"gravity\": \"center\",\n    \"scale\": 1\n  },\n  \"webhook_url\": \"https://example.com/webhooks/samsa\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.samsa.ai/public/v1/images/resizes")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"image\": {\n    \"image_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"url\": \"https://cdn.example.com/photo.png\",\n    \"base64\": \"<string>\",\n    \"mime_type\": \"image/png\"\n  },\n  \"aspect_ratio\": \"<string>\",\n  \"resolution\": \"1K\",\n  \"num_outputs\": 1,\n  \"prompt\": \"\",\n  \"placement\": {\n    \"gravity\": \"center\",\n    \"scale\": 1\n  },\n  \"webhook_url\": \"https://example.com/webhooks/samsa\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.samsa.ai/public/v1/images/resizes")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"image\": {\n    \"image_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"url\": \"https://cdn.example.com/photo.png\",\n    \"base64\": \"<string>\",\n    \"mime_type\": \"image/png\"\n  },\n  \"aspect_ratio\": \"<string>\",\n  \"resolution\": \"1K\",\n  \"num_outputs\": 1,\n  \"prompt\": \"\",\n  \"placement\": {\n    \"gravity\": \"center\",\n    \"scale\": 1\n  },\n  \"webhook_url\": \"https://example.com/webhooks/samsa\"\n}"

response = http.request(request)
puts response.read_body

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "estimated_credits": 123
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

POST

images

resizes

Resize an image to a new aspect ratio (server-side outpaint)

curl --request POST \
  --url https://api.samsa.ai/public/v1/images/resizes \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "image": {
    "image_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "url": "https://cdn.example.com/photo.png",
    "base64": "<string>",
    "mime_type": "image/png"
  },
  "aspect_ratio": "<string>",
  "resolution": "1K",
  "num_outputs": 1,
  "prompt": "",
  "placement": {
    "gravity": "center",
    "scale": 1
  },
  "webhook_url": "https://example.com/webhooks/samsa"
}
'

import requests

url = "https://api.samsa.ai/public/v1/images/resizes"

payload = {
    "image": {
        "image_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "url": "https://cdn.example.com/photo.png",
        "base64": "<string>",
        "mime_type": "image/png"
    },
    "aspect_ratio": "<string>",
    "resolution": "1K",
    "num_outputs": 1,
    "prompt": "",
    "placement": {
        "gravity": "center",
        "scale": 1
    },
    "webhook_url": "https://example.com/webhooks/samsa"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    image: {
      image_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
      url: 'https://cdn.example.com/photo.png',
      base64: '<string>',
      mime_type: 'image/png'
    },
    aspect_ratio: '<string>',
    resolution: '1K',
    num_outputs: 1,
    prompt: '',
    placement: {gravity: 'center', scale: 1},
    webhook_url: 'https://example.com/webhooks/samsa'
  })
};

fetch('https://api.samsa.ai/public/v1/images/resizes', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.samsa.ai/public/v1/images/resizes",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'image' => [
        'image_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
        'url' => 'https://cdn.example.com/photo.png',
        'base64' => '<string>',
        'mime_type' => 'image/png'
    ],
    'aspect_ratio' => '<string>',
    'resolution' => '1K',
    'num_outputs' => 1,
    'prompt' => '',
    'placement' => [
        'gravity' => 'center',
        'scale' => 1
    ],
    'webhook_url' => 'https://example.com/webhooks/samsa'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.samsa.ai/public/v1/images/resizes"

	payload := strings.NewReader("{\n  \"image\": {\n    \"image_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"url\": \"https://cdn.example.com/photo.png\",\n    \"base64\": \"<string>\",\n    \"mime_type\": \"image/png\"\n  },\n  \"aspect_ratio\": \"<string>\",\n  \"resolution\": \"1K\",\n  \"num_outputs\": 1,\n  \"prompt\": \"\",\n  \"placement\": {\n    \"gravity\": \"center\",\n    \"scale\": 1\n  },\n  \"webhook_url\": \"https://example.com/webhooks/samsa\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.samsa.ai/public/v1/images/resizes")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"image\": {\n    \"image_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"url\": \"https://cdn.example.com/photo.png\",\n    \"base64\": \"<string>\",\n    \"mime_type\": \"image/png\"\n  },\n  \"aspect_ratio\": \"<string>\",\n  \"resolution\": \"1K\",\n  \"num_outputs\": 1,\n  \"prompt\": \"\",\n  \"placement\": {\n    \"gravity\": \"center\",\n    \"scale\": 1\n  },\n  \"webhook_url\": \"https://example.com/webhooks/samsa\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.samsa.ai/public/v1/images/resizes")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"image\": {\n    \"image_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"url\": \"https://cdn.example.com/photo.png\",\n    \"base64\": \"<string>\",\n    \"mime_type\": \"image/png\"\n  },\n  \"aspect_ratio\": \"<string>\",\n  \"resolution\": \"1K\",\n  \"num_outputs\": 1,\n  \"prompt\": \"\",\n  \"placement\": {\n    \"gravity\": \"center\",\n    \"scale\": 1\n  },\n  \"webhook_url\": \"https://example.com/webhooks/samsa\"\n}"

response = http.request(request)
puts response.read_body

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "estimated_credits": 123
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "param": "aspect_ratio"
  }
}

Ridimensiona una image sorgente verso un nuovo aspect_ratio. Il ridimensionamento è un outpainting lato server: il backend renderizza la composizione e la maschera dalla tua sorgente al rapporto target e riempie la nuova tela esposta con un’estensione in tinta con lo stile. La chiamata restituisce 202 Accepted con un id del job; interroga GET /images/resizes/{id} per il risultato. L’image prende esattamente uno tra image_id, url o base64 + mime_type. Richiede lo scope images.transform.

Esempio: una sorgente per modalità

curl -X POST https://api.samsa.ai/public/v1/images/resizes \
  -H "Authorization: Bearer $SAMSA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "image": { "image_id": "123e4567-e89b-12d3-a456-426614174000" },
    "aspect_ratio": "16:9"
  }'

curl -X POST https://api.samsa.ai/public/v1/images/resizes \
  -H "Authorization: Bearer $SAMSA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "image": { "url": "https://cdn.example.com/portrait.png" },
    "aspect_ratio": "1:1",
    "resolution": "2K",
    "placement": { "gravity": "top", "scale": 0.8 }
  }'

curl -X POST https://api.samsa.ai/public/v1/images/resizes \
  -H "Authorization: Bearer $SAMSA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "image": { "base64": "iVBORw0KGgoAAAANSUhEUg...", "mime_type": "image/png" },
    "aspect_ratio": "21:9",
    "num_outputs": 2,
    "prompt": "extend the mountain range on both sides",
    "webhook_url": "https://example.com/webhooks/samsa"
  }'

La risposta 202 è l’handle del job asincrono:

202 Accepted

{
  "id": "e6f7a8b9-0c1d-4e2f-3a4b-5c6d7e8f9a0b",
  "status": "pending",
  "estimated_credits": 5
}

aspect_ratio è obbligatorio e uno tra 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16. resolution (1K predefinito, 2K, 4K) è metadato del provider che scala i credits — la tela viene sempre renderizzata con un bordo massimo di 1024px. num_outputs (1–4) è 1 per impostazione predefinita e ogni output viene addebitato. prompt è una guida facoltativa per l’area appena generata (validata se non vuota). placement posiziona la sorgente sulla tela target: gravity è uno tra center (predefinito), top, bottom, left, right, top_left, top_right, bottom_left, bottom_right; scale è in (0, 1] (predefinito 1.0 = contain-fit massimo).

No-op maschera vuota. Quando l’aspect_ratio + placement richiesti non lasciano (quasi) alcuna nuova area da generare — ad es. la sorgente corrisponde già al rapporto target a scale = 1 — e non viene fornito alcun prompt, il job salta il modello, restituisce la composizione appiattita e rimborsa gli output non utilizzati. Si completes comunque.

Credits

Ogni output costa 5 credits a 1K, con scalatura in base alla risoluzione (1K ×1, 2K ×2, 4K ×4) e moltiplicato per num_outputs. Vedi Prezzi.

Errori

Stato	Codice	Quando
`402`	`insufficient_credits` / `insufficient_team_credits` / `insufficient_unallocated_credits`	Il saldo che questa credenziale può spendere è al di sotto del costo del job. Le organizzazioni con almeno un team attivo ricevono i codici legati ai team invece di `insufficient_credits` (eccetto le organizzazioni di sistema esenti dal budgeting per team). Un guasto operativo nella detrazione stessa può comunque restituire il generico `insufficient_credits`, qualunque sia il regime.
`402`	`subscription_inactive`	L’organizzazione non ha un abbonamento utilizzabile.
`403`	`missing_scope`	La chiave non ha lo scope `images.transform`.
`404`	`not_found`	L’`image_id` sorgente è sconosciuto o non appartiene al creatore della chiave — anche un’immagine creata da un altro membro della tua organizzazione è un `404`.
`422`	`validation_error`	Zero/più modalità sorgente, `aspect_ratio` mancante/non valido, `placement` non valido, un `prompt` in violazione delle policy, o un raster sorgente oltre 33.554.432 pixel (32 MP, larghezza × altezza), rifiutato con `param: image` prima di qualsiasi rendering.
`429`	`rate_limited` / `too_many_active_jobs`	Finestra di frequenza per chiave o limite di concorrenza per organizzazione superato.

Autorizzazioni

Authorization

string

header

obbligatorio

Organization API key as a bearer token: Authorization: Bearer samsa_sk_....

Corpo

application/json

POST /images/resizes body (SAM-818 / S8.6 — ADR §8, §10).

Resize = server-side outpaint: the backend renders the composition + mask from your source at the target aspect_ratio and fills the newly exposed canvas with a style-matched extension. The source is exactly one of image_id (an image in your organization's context), an https url, or base64+mime_type. aspect_ratio is REQUIRED (validated against the resize engine's supported list). num_outputs defaults to 1; each output is billed at 5 x resolution_multiplier credits (1K:1x, 2K:2x, 4K:4x).

Empty-mask no-op: when the requested aspect_ratio + placement leave (almost) no new area to generate (e.g. the source already matches the target ratio at scale=1) and no prompt is given, the job SKIPS the model, returns the flattened composition, and REFUNDS the unused outputs — it still completes.

image

PublicImageEditSource · object

obbligatorio

The source image: exactly one of image_id, an https url, or base64+mime_type. The source raster must be at most 33,554,432 pixels (32 MP, width x height) — a larger source returns 422 with param: image before any rendering. The composition canvas is at most 1024px per edge, so higher-resolution sources gain no output detail.

Show child attributes

aspect_ratio

string

obbligatorio

Target aspect ratio (REQUIRED) — one of: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16.

Esempio:

"16:9"

resolution

string

predefinito:1K

Provider resolution tier — 1K (default), 2K, or 4K. The canvas is always rendered at a 1024px max edge (per S8.5); the tier is provider metadata that scales credits 1K:1x, 2K:2x, 4K:4x per output.

Esempio:

"1K"

num_outputs

integer

predefinito:1

Number of images to generate (1-4). Defaults to 1; each output is billed.

Intervallo richiesto: 1 <= x <= 4

Esempio:

1

prompt

string

predefinito:""

Optional instruction for the newly generated area. When non-empty it runs the app's prompt validation (rejects empty / malformed / policy-violating prompts with a 422).

Esempio:

"extend the beach and the ocean horizon naturally"

placement

PublicResizePlacement · object | null

Optional placement of the source on the target canvas (gravity + scale). Defaults to centered, maximum contain-fit.

Show child attributes

webhook_url

string | null

Optional https webhook notified once on terminal status (signed per the webhook signature scheme; see the webhooks docs).

Esempio:

"https://example.com/webhooks/samsa"

Risposta

Successful Response

Shared 202 body for the transform-op submits (SAM-813 / S8 wave).

Every POST /images/<op> returns the async job handle {id, status, estimated_credits}. The initial status is pending (the job is queued), with ONE exception: background-removals and vectorizations answer an owned-image_id cache hit (a ready result already exists for that image) with status: "completed" and estimated_credits: 0 — no new job is queued, the completed webhook event is emitted immediately for a supplied webhook_url, and the result is already available from the op's GET .../{id} endpoint. The other transform ops (img2img, variations, resizes, upscales) always start pending.

string<uuid>

obbligatorio

The job id — poll the op's GET .../{id} endpoint.

status

enum<string>

obbligatorio

Initial status: pending (job queued — enter the polling flow), or completed with estimated_credits: 0 when background-removals / vectorizations serve an owned-image cache hit (the result is immediately available).

Opzioni disponibili:

pending,

processing,

completed,

failed,

cancelled

Esempio:

"pending"

estimated_credits

integer

obbligatorio

Credits this job is expected to cost — 0 on a cache-hit completed response.

Esempio:

5

Panoramica

Endpoint

Ridimensionare un'immagine

Esempio: una sorgente per modalità

Credits

Errori

Autorizzazioni

Corpo

Risposta

​Esempio: una sorgente per modalità

​Credits

​Errori

Autorizzazioni

Corpo

Risposta

Esempio: una sorgente per modalità

Credits

Errori