Technology development has been a continuous process and multimedia transmission in the public network has been advancing; it demands the security for the data being shared. Image is one of the very common media in the move since decades and various encryption techniques like AES, DES, RSA, chaos technique etc are proposed to secure the image content. Encryption techniques act on different parts of the image like Least Significant Bit (LSB), entire bit stream, selected rows and columns etc. The implemented encryption techniques are analysed with various parameters like Peak Signal to noise Ratio (PSNR), Mean Square Error(MSE), histogram analysis, etc. A brief discussion of such recent techniques has been presented in this article.