matlab - How to add noise to an image loaded from .mat file? -


इसलिए मैंने .mat फ़ाइल लोड की है: 

  लोड Yale_32x32.mat; एक्स = फी ';

तब मैं इस छवि का उपयोग कर देख सकता हूँ: 

  imshow (reshape (एक्स (:, 1), 32,32), [])   
 165 छवियाँ हैं, इसलिए दूसरा आयाम 1 से 165 तक किसी भी संख्या में हो सकता है। मान लीजिए, मैं छवियों में से एक को 'नमक-काली मिर्च' शोर जोड़ना चाहता हूं। अगर मैं करने की कोशिश करता हूं:  
  J = इम्यूइज़ (एक्स (:, 1), 32,32), 'नमक और मिर्च', 0.05);  
 
 और फिर: 
 
  imshow (j, []);  
 
 ... यह मुझे पूरी तरह से सफेद पृष्ठभूमि पर एक शोर प्रदर्शित करेगा मैं क्या कर रहा हूं? 
 
 संपादित करें 
 
  एक्स (:, 1)  मुझे देता है: 
 
  70 68 49 53 50 50 37 33 26 13 17 61 69  
 
 109 .... 
 
 आदि। 
 
 आवेदन करने के बाद  j = imnoise (एक्स (:, 1), 'नमक और मिर्च', 0.05); , मुझे मिलता है: 
 
  1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 आदि।  
 
 संपादित करें 
 
 फिक्स्ड: मुझे अपनी छवि को सामान्य करना पड़ा धन्यवाद।


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