Histogram
Histogram (Tonal Distribution Graph)
An image histogram is a graph showing the distribution of pixel brightness values from shadows (left) to highlights (right). Photographers and editors use histograms to evaluate exposure, contrast, and tonal balance.
Teknik Detay
A histogram plots 256 bins (for 8-bit images) where each bin counts pixels at that brightness level. RGB histograms show separate red, green, and blue channel distributions to identify color casts.
Ornek
```javascript
// Histogram: processing with Canvas API
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
ctx.drawImage(sourceImage, 0, 0);
const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
// Process pixels in imageData.data (RGBA array)
```
Ilgili Araclar
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