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How to use rfft2d_fr16 or rfft2d_fr32 on grayscale images

		
	
				

			

									
					    SanthoshG
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Jun 1, 2026 
				
			
			
		

		
		                     
				
        		

		    
		    		    

		      		            		        
Category: Software

    		        		            		    
Product Number:  BF-609 

    		        		        		        
Software Version: CCES 2.12.1

    		    		    

		    		    
		    			

			    
Hi,

I am trying to use rfft2d_fr16 function for FFT, but unaware of what size of images should i use for input buffers and output buffers and temp buffers. If you tell me it will be so helpful and i need sample input and output images to verify my result as per image viewer or array data if it is complex data.

Thanks,


Santhosh

			

			
									
		                             
                        

    

                                            
                 cces
                
                                                    
                 bf-609
                
                                                    
                 dsp
                
                                                    
                 software
                
                                                    
                 CCES 2.12.1
                
                                        
                                            
                
                
                                        
                                            
                
                
                                
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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Jun 3, 2026 7:39 AM
            
            
						
			            		
    
		
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    Hi Santhosh,
    

    Thank you for your inquiry.
    

    You can get the detailed information about this library function and sample code from the below CCES help path
    

    CrossCore® Embedded Studio 2.12.0 > Blackfin® Development Tools Documentation > C/C++ Compiler and Library Manual for Blackfin® Processors > DSP Run-Time Library > DSP Run-Time Library Reference
    

    Hope this helps.
    

    Best Regards,
    Santhakumari.V
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Jun 3, 2026 7:39 AM
            
            
						
			            		
    
		
										0
					
	
    

		
		
    
		
    
                                
                                                            
    
					
    Hi Santhosh,
    

    Thank you for your inquiry.
    

    You can get the detailed information about this library function and sample code from the below CCES help path
    

    CrossCore® Embedded Studio 2.12.0 > Blackfin® Development Tools Documentation > C/C++ Compiler and Library Manual for Blackfin® Processors > DSP Run-Time Library > DSP Run-Time Library Reference
    

    Hope this helps.
    

    Best Regards,
    Santhakumari.V
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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